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Publisher: Cambridge University Press   (Total: 371 journals)

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Showing 1 - 200 of 371 Journals sorted alphabetically
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 4, SJR: 0.733, CiteScore: 2)
Acta Numerica     Hybrid Journal   (Followers: 3, SJR: 6.709, CiteScore: 10)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 9)
Advances in Applied Mathematics and Mechanics     Full-text available via subscription   (SJR: 0.441, CiteScore: 1)
Aeronautical J., The     Hybrid Journal   (Followers: 3)
Africa     Hybrid Journal   (Followers: 19, SJR: 0.582, CiteScore: 1)
African Studies Review     Full-text available via subscription   (Followers: 18, SJR: 0.437, CiteScore: 1)
Ageing & Society     Hybrid Journal   (Followers: 40, SJR: 0.756, CiteScore: 2)
Agricultural and Resource Economics Review     Open Access   (Followers: 5, SJR: 0.414, CiteScore: 1)
AI EDAM     Hybrid Journal   (SJR: 0.375, CiteScore: 1)
AJS Review     Full-text available via subscription   (Followers: 2, SJR: 0.128, CiteScore: 0)
American Political Science Review     Hybrid Journal   (Followers: 257, SJR: 5.587, CiteScore: 4)
Anatolian Studies     Full-text available via subscription   (Followers: 4, SJR: 0.528, CiteScore: 1)
Ancient Mesoamerica     Hybrid Journal   (Followers: 10, SJR: 0.478, CiteScore: 1)
Anglo-Saxon England     Hybrid Journal   (Followers: 35, SJR: 0.1, CiteScore: 0)
animal     Hybrid Journal   (Followers: 3, SJR: 0.842, CiteScore: 2)
Animal Health Research Reviews     Hybrid Journal   (Followers: 3, SJR: 0.69, CiteScore: 2)
Animal Science     Full-text available via subscription   (Followers: 9)
Annals of Actuarial Science     Full-text available via subscription   (Followers: 1)
Annual of the British School at Athens     Full-text available via subscription   (Followers: 15, SJR: 0.177, CiteScore: 0)
Annual Review of Applied Linguistics     Hybrid Journal   (Followers: 36, SJR: 3.223, CiteScore: 4)
Antarctic Science     Hybrid Journal   (Followers: 1, SJR: 0.643, CiteScore: 1)
Antichthon     Full-text available via subscription   (Followers: 1, SJR: 0.101, CiteScore: 0)
Antiquaries J., The     Full-text available via subscription   (Followers: 8, SJR: 0.106, CiteScore: 0)
Antiquity     Hybrid Journal   (Followers: 27)
ANZIAM J.     Open Access   (Followers: 1, SJR: 0.216, CiteScore: 0)
Applied Psycholinguistics     Hybrid Journal   (Followers: 22, SJR: 0.945, CiteScore: 2)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 8, SJR: 0.404, CiteScore: 2)
Arabic Sciences and Philosophy     Hybrid Journal   (Followers: 9, SJR: 0.101, CiteScore: 0)
Arbor Clinical Nutrition Updates     Full-text available via subscription   (Followers: 3)
Archaeological Dialogues     Hybrid Journal   (Followers: 36, SJR: 0.898, CiteScore: 1)
Archaeological Reports     Full-text available via subscription   (Followers: 5, SJR: 0.128, CiteScore: 0)
arq: Architectural Research Quarterly     Hybrid Journal   (Followers: 8, SJR: 0.123, CiteScore: 0)
Asian J. of Comparative Law     Hybrid Journal   (Followers: 9, SJR: 0.129, CiteScore: 0)
Asian J. of Intl. Law     Hybrid Journal   (Followers: 14, SJR: 0.135, CiteScore: 0)
Asian J. of Law and Society     Hybrid Journal   (Followers: 7, SJR: 0.195, CiteScore: 0)
Astin Bulletin     Full-text available via subscription   (Followers: 1, SJR: 0.878, CiteScore: 1)
Australasian J. of Organisational Psychology     Hybrid Journal   (Followers: 9, SJR: 0.154, CiteScore: 1)
Australasian J. of Special Education     Full-text available via subscription   (Followers: 8, SJR: 0.187, CiteScore: 0)
Australian J. of Environmental Education     Full-text available via subscription   (Followers: 7, SJR: 0.403, CiteScore: 1)
Australian J. of Indigenous Education, The     Full-text available via subscription   (Followers: 10, SJR: 0.26, CiteScore: 1)
Australian J. of Rehabilitation Counseling     Full-text available via subscription   (Followers: 4, SJR: 0.144, CiteScore: 0)
Austrian History Yearbook     Full-text available via subscription   (Followers: 9, SJR: 0.161, CiteScore: 0)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 34, SJR: 0.595, CiteScore: 1)
Behaviour Change     Full-text available via subscription   (Followers: 13, SJR: 0.508, CiteScore: 1)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 139, SJR: 0.976, CiteScore: 2)
Bilingualism: Language and Cognition     Hybrid Journal   (Followers: 37, SJR: 1.446, CiteScore: 2)
Biofilms     Full-text available via subscription   (Followers: 1)
Bird Conservation Intl.     Hybrid Journal   (Followers: 24, SJR: 0.581, CiteScore: 1)
BJPsych Advances     Full-text available via subscription   (Followers: 54, SJR: 0.275, CiteScore: 0)
BJPsych Intl.     Open Access   (Followers: 2)
BJPsych Open     Open Access  
Brain Impairment     Full-text available via subscription   (Followers: 2, SJR: 0.321, CiteScore: 1)
Breast Cancer Online     Full-text available via subscription   (Followers: 4)
Britannia     Full-text available via subscription   (Followers: 7, SJR: 0.111, CiteScore: 0)
British Actuarial J.     Full-text available via subscription  
British Catholic History     Hybrid Journal   (Followers: 1, SJR: 0.133, CiteScore: 1)
British J. for the History of Science     Hybrid Journal   (Followers: 22, SJR: 0.235, CiteScore: 0)
British J. of Anaesthetic and Recovery Nursing     Full-text available via subscription   (Followers: 8)
British J. of Music Education     Hybrid Journal   (Followers: 24, SJR: 0.564, CiteScore: 1)
British J. Of Nutrition     Hybrid Journal   (Followers: 74, SJR: 1.612, CiteScore: 4)
British J. of Political Science     Hybrid Journal   (Followers: 171, SJR: 4.661, CiteScore: 4)
British J. of Psychiatry     Hybrid Journal   (Followers: 191, SJR: 2.844, CiteScore: 3)
Bulletin of Entomological Research     Hybrid Journal   (Followers: 11, SJR: 0.805, CiteScore: 2)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 0.555, CiteScore: 1)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 1, SJR: 0.44, CiteScore: 0)
Bulletin of the School of Oriental and African Studies     Hybrid Journal   (Followers: 19, SJR: 0.146, CiteScore: 0)
Business and Human Rights J.     Full-text available via subscription   (Followers: 3, SJR: 0.536, CiteScore: 1)
Business Ethics Quarterly     Full-text available via subscription   (Followers: 13, SJR: 1.098, CiteScore: 2)
Business History Review     Full-text available via subscription   (Followers: 15, SJR: 0.347, CiteScore: 1)
Cambridge Archaeological J.     Hybrid Journal   (Followers: 129, SJR: 1.121, CiteScore: 1)
Cambridge Classical J.     Full-text available via subscription   (Followers: 18, SJR: 0.101, CiteScore: 0)
Cambridge J. of Postcolonial Literary Inquiry     Hybrid Journal   (Followers: 7)
Cambridge Law J.     Hybrid Journal   (Followers: 166, SJR: 0.213, CiteScore: 0)
Cambridge Opera J.     Hybrid Journal   (Followers: 5, SJR: 0.14, CiteScore: 0)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 11, SJR: 0.299, CiteScore: 1)
Camden Fifth Series     Full-text available via subscription   (Followers: 3)
Canadian Entomologist     Hybrid Journal   (Followers: 5, SJR: 0.482, CiteScore: 1)
Canadian J. of Emergency Medicine     Hybrid Journal   (Followers: 12, SJR: 0.624, CiteScore: 1)
Canadian J. of Law & Jurisprudence     Full-text available via subscription   (Followers: 10, SJR: 0.237, CiteScore: 0)
Canadian J. of Law and Society     Hybrid Journal   (Followers: 20, SJR: 0.259, CiteScore: 1)
Canadian J. of Neurological Sciences     Full-text available via subscription   (SJR: 0.549, CiteScore: 1)
Canadian J. of Political Science/Revue canadienne de science politique     Full-text available via subscription   (Followers: 23, SJR: 0.385, CiteScore: 1)
Canadian J. on Aging     Hybrid Journal   (Followers: 10, SJR: 0.426, CiteScore: 1)
Canadian Yearbook of Intl. Law / Annuaire canadien de droit international     Full-text available via subscription   (Followers: 2)
Cardiology in the Young     Hybrid Journal   (Followers: 32, SJR: 0.372, CiteScore: 1)
Central European History     Full-text available via subscription   (Followers: 30, SJR: 0.159, CiteScore: 0)
Children Australia     Partially Free   (Followers: 2, SJR: 0.255, CiteScore: 0)
China Quarterly     Hybrid Journal   (Followers: 51, SJR: 2.289, CiteScore: 3)
Chinese J. of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Church History: Studies in Christianity and Culture     Full-text available via subscription   (Followers: 72, SJR: 0.106, CiteScore: 0)
Classical Quarterly     Full-text available via subscription   (Followers: 29, SJR: 0.204, CiteScore: 0)
Classical Review     Full-text available via subscription   (Followers: 25)
CNS Spectrums     Hybrid Journal   (Followers: 3, SJR: 1.391, CiteScore: 3)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 13)
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4, SJR: 0.839, CiteScore: 1)
Communications in Computational Physics     Full-text available via subscription   (Followers: 2, SJR: 1.048, CiteScore: 2)
Comparative Studies in Society and History     Full-text available via subscription   (Followers: 47, SJR: 0.585, CiteScore: 1)
Compositio Mathematica     Full-text available via subscription   (Followers: 1, SJR: 3.139, CiteScore: 1)
Contemporary European History     Hybrid Journal   (Followers: 25, SJR: 0.263, CiteScore: 1)
Continuity and Change     Hybrid Journal   (Followers: 12, SJR: 0.107, CiteScore: 0)
Dance Research J.     Full-text available via subscription   (Followers: 9, SJR: 0.211, CiteScore: 0)
Development and Psychopathology     Hybrid Journal   (Followers: 9, SJR: 2.068, CiteScore: 4)
Dialogue Canadian Philosophical Review/Revue canadienne de philosophie     Full-text available via subscription   (Followers: 3, SJR: 0.156, CiteScore: 0)
Diamond Light Source Proceedings     Full-text available via subscription  
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 13, SJR: 0.471, CiteScore: 1)
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 9, SJR: 0.561, CiteScore: 1)
Early China     Hybrid Journal   (Followers: 3)
Early Music History     Hybrid Journal   (Followers: 8, SJR: 0.101, CiteScore: 0)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5)
East Asian J. on Applied Mathematics     Full-text available via subscription   (SJR: 0.418, CiteScore: 1)
Ecclesiastical Law J.     Full-text available via subscription   (Followers: 6, SJR: 0.114, CiteScore: 0)
Econometric Theory     Hybrid Journal   (Followers: 16, SJR: 2.915, CiteScore: 1)
Economics and Philosophy     Hybrid Journal   (Followers: 14, SJR: 0.622, CiteScore: 1)
Edinburgh J. of Botany     Hybrid Journal   (SJR: 0.283, CiteScore: 1)
Eighteenth-Century Music     Hybrid Journal   (Followers: 11, SJR: 0.113, CiteScore: 0)
English Language and Linguistics     Hybrid Journal   (Followers: 24, SJR: 0.52, CiteScore: 1)
English Profile J.     Hybrid Journal   (Followers: 2)
English Today     Hybrid Journal   (Followers: 8, SJR: 0.279, CiteScore: 0)
Enterprise & Society : The Intl. J. of Business History     Hybrid Journal   (Followers: 17, SJR: 0.245, CiteScore: 1)
Environment and Development Economics     Hybrid Journal   (Followers: 33, SJR: 0.617, CiteScore: 1)
Environmental Conservation     Hybrid Journal   (Followers: 59, SJR: 1.028, CiteScore: 2)
Environmental Practice     Full-text available via subscription   (Followers: 3, SJR: 0.145, CiteScore: 0)
Epidemiology & Infection     Hybrid Journal   (Followers: 15, SJR: 1.128, CiteScore: 2)
Epidemiology and Psychiatric Sciences     Hybrid Journal   (Followers: 3, SJR: 1.494, CiteScore: 2)
Episteme     Hybrid Journal   (Followers: 12, SJR: 0.756, CiteScore: 1)
Equine and Comparative Exercise Physiology     Full-text available via subscription   (Followers: 6)
Ergodic Theory and Dynamical Systems     Hybrid Journal   (Followers: 2, SJR: 1.193, CiteScore: 1)
Ethics & Intl. Affairs     Full-text available via subscription   (Followers: 13, SJR: 0.557, CiteScore: 1)
European Constitutional Law Review (EuConst)     Full-text available via subscription   (Followers: 32, SJR: 1.009, CiteScore: 1)
European J. of Applied Mathematics     Hybrid Journal   (SJR: 0.52, CiteScore: 1)
European J. of Sociology     Hybrid Journal   (Followers: 30, SJR: 0.643, CiteScore: 1)
European Political Science Review     Hybrid Journal   (Followers: 21, SJR: 1.816, CiteScore: 2)
European Review     Hybrid Journal   (Followers: 17, SJR: 0.131, CiteScore: 0)
Experimental Agriculture     Hybrid Journal   (Followers: 13, SJR: 0.542, CiteScore: 1)
Expert Reviews in Molecular Medicine     Hybrid Journal   (Followers: 1, SJR: 1.647, CiteScore: 4)
Fetal and Maternal Medicine Review     Hybrid Journal   (Followers: 4)
Financial History Review     Full-text available via subscription   (Followers: 14, SJR: 0.238, CiteScore: 1)
Foreign Policy Bulletin     Hybrid Journal   (Followers: 6)
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Genetics Research     Hybrid Journal   (Followers: 4, SJR: 0.483, CiteScore: 1)
Geological Magazine     Hybrid Journal   (Followers: 16, SJR: 0.966, CiteScore: 2)
Glasgow Mathematical J.     Full-text available via subscription   (Followers: 1, SJR: 0.604, CiteScore: 0)
Global Constitutionalism     Hybrid Journal   (Followers: 16)
Global Mental Health     Open Access   (Followers: 7)
Government and Opposition     Full-text available via subscription   (Followers: 20, SJR: 0.965, CiteScore: 2)
Greece & Rome     Partially Free   (Followers: 21, SJR: 0.113, CiteScore: 0)
Hague J. on the Rule of Law     Full-text available via subscription   (Followers: 13, SJR: 0.271, CiteScore: 1)
Harvard Theological Review     Full-text available via subscription   (Followers: 66, SJR: 0.165, CiteScore: 0)
Health Economics, Policy and Law     Hybrid Journal   (Followers: 25, SJR: 0.745, CiteScore: 1)
Hegel Bulletin     Full-text available via subscription   (Followers: 1)
High Power Laser Science and Engineering     Open Access   (Followers: 3, SJR: 0.901, CiteScore: 3)
Historical J.     Hybrid Journal   (Followers: 34, SJR: 0.247, CiteScore: 1)
History in Africa     Full-text available via subscription   (Followers: 8)
Horizons     Partially Free   (Followers: 1, SJR: 0.129, CiteScore: 0)
Industrial and Organizational Psychology     Hybrid Journal   (Followers: 20, SJR: 0.916, CiteScore: 1)
Infection Control and Hospital Epidemiology     Full-text available via subscription   (Followers: 36, SJR: 1.97, CiteScore: 3)
Intl. & Comparative Law Quarterly     Full-text available via subscription   (Followers: 206, SJR: 0.369, CiteScore: 1)
Intl. J. of Asian Studies     Hybrid Journal   (Followers: 12, SJR: 0.143, CiteScore: 0)
Intl. J. of Astrobiology     Hybrid Journal   (Followers: 2, SJR: 0.548, CiteScore: 1)
Intl. J. of Cultural Property     Full-text available via subscription   (Followers: 13, SJR: 0.253, CiteScore: 1)
Intl. J. of Disability Management Research     Full-text available via subscription   (Followers: 8, SJR: 0.105, CiteScore: 0)
Intl. J. of Law in Context     Hybrid Journal   (Followers: 16, SJR: 0.275, CiteScore: 1)
Intl. J. of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8, SJR: 0.184, CiteScore: 1)
Intl. J. of Middle East Studies     Hybrid Journal   (Followers: 66, SJR: 0.434, CiteScore: 0)
Intl. J. of Technology Assessment in Health Care     Hybrid Journal   (Followers: 13, SJR: 0.714, CiteScore: 1)
Intl. J. of Tropical Insect Science     Hybrid Journal   (Followers: 1, SJR: 0.334, CiteScore: 1)
Intl. Labor and Working-Class History     Full-text available via subscription   (Followers: 11, SJR: 0.182, CiteScore: 0)
Intl. Organization     Full-text available via subscription   (Followers: 90, SJR: 8.527, CiteScore: 5)
Intl. Psychogeriatrics     Hybrid Journal   (Followers: 12, SJR: 1.048, CiteScore: 2)
Intl. Review of Social History     Full-text available via subscription   (Followers: 25, SJR: 0.315, CiteScore: 1)
Intl. Review of the Red Cross     Full-text available via subscription   (Followers: 10, SJR: 0.214, CiteScore: 0)
Intl. Theory: A J. of Intl. Politics, Law and Philosophy     Hybrid Journal   (Followers: 18, SJR: 2.293, CiteScore: 2)
Iraq     Full-text available via subscription   (Followers: 2)
Irish Historical Studies     Hybrid Journal   (Followers: 5, SJR: 0.103, CiteScore: 0)
Irish J. of Psychological Medicine     Hybrid Journal   (Followers: 2, SJR: 0.221, CiteScore: 0)
Israel Law Review     Hybrid Journal   (Followers: 2, SJR: 0.165, CiteScore: 0)
Itinerario     Full-text available via subscription   (Followers: 9, SJR: 0.158, CiteScore: 0)
J. of African History     Hybrid Journal   (Followers: 21, SJR: 0.348, CiteScore: 1)
J. of African Law     Full-text available via subscription   (Followers: 3, SJR: 0.113, CiteScore: 0)
J. of Agricultural and Applied Economics     Open Access   (Followers: 1, SJR: 0.263, CiteScore: 1)
J. of Agricultural Science     Full-text available via subscription   (Followers: 8, SJR: 0.563, CiteScore: 1)
J. of American Studies     Hybrid Journal   (Followers: 20, SJR: 0.164, CiteScore: 0)
J. of Anglican Studies     Hybrid Journal   (Followers: 6, SJR: 0.101, CiteScore: 0)
J. of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
J. of Asian Studies     Full-text available via subscription   (Followers: 37, SJR: 0.591, CiteScore: 1)
J. of Benefit-Cost Analysis     Hybrid Journal   (Followers: 2)
J. of Biosocial Science     Hybrid Journal   (Followers: 3, SJR: 0.48, CiteScore: 1)
J. of British Studies     Full-text available via subscription   (Followers: 31, SJR: 0.246, CiteScore: 0)
J. of Child Language     Hybrid Journal   (Followers: 20, SJR: 1.035, CiteScore: 2)
J. of Classics Teaching     Open Access  
J. of Dairy Research     Full-text available via subscription   (Followers: 7, SJR: 0.573, CiteScore: 1)
J. of Demographic Economics     Hybrid Journal   (Followers: 3, SJR: 1.227, CiteScore: 1)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.843, CiteScore: 2)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of East Asian Studies     Full-text available via subscription   (Followers: 12, SJR: 0.59, CiteScore: 1)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.138, CiteScore: 0)
J. of Economic History     Full-text available via subscription   (Followers: 44, SJR: 1.82, CiteScore: 2)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 5, SJR: 2.526, CiteScore: 2)

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Journal Cover
Diamond Light Source Proceedings
Number of Followers: 0  
 
  Full-text available via subscription Subscription journal
ISSN (Online) 2044-8201
Published by Cambridge University Press Homepage  [371 journals]
  • Extended X-ray absorption fine structure studies of magnetic nanoparticles
    • Authors: A. Agarwal; M. K. Singh, T. Kaneko, S.-I. Nagamatsu, T. Konishi, T. Fujikawa
      Abstract: We have synthesized nickel by means of pulsed laser ablation. A nickel disc was used for ablation with the focused output of fundamental harmonic from Nd:YAG laser. X-ray diffraction result shows that the synthesized nanoparticles are of pure metallic nickel with a face-centred cubic structure and the average particle size is 35 nm. The extended X-ray absorption fine structure (EXAFS) studies of pure nickel foil and the synthesized nanoparticles show similar structures. The position of the main peak is same in these nanoparticles with reference to the nickel foil. The only difference was observed in the reduction of the amplitude. The nearest-neighbour distance is similar as for pure nickel foil. The Debye–Waller factor is also similar. There is no trace of oxide and hydroxide in the EXAFS data, suggesting that the synthesized nanoparticles contain only nickel metal.
      PubDate: 2011-04-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000165
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • X-ray absorption spectroscopy characterization of the interface in capped
           ZnO nanoparticles
    • Authors: C. Guglieri; J. Chaboy
      Abstract: We report here an extensive study of the ZnO nanoparticles (NPs) capped with different organic molecules by X-ray absorption spectroscopy (XAS) methods to proceed in the understanding of their unusual magnetism. We have performed a detailed ab initio calculation of the Zn K-edge XAS aimed at determining the influence of the different coordination induced by the capping. The results suggest that the observed differences of the XAS spectra are due to the formation of a well-defined interface between the oxide NPs and the capping molecules. The appearance of magnetism should be related to the modifications induced in the NPs by the surface bonds between Zn and the capping molecule.
      PubDate: 2011-04-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000177
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Element-specific high-resolution diffraction microscopy using focused hard
           X-ray beam
    • Authors: Y. Takahashi; Y. Nishino, R. Tsutsumi, N. Zettsu, K. Yamauchi, T. Ishikawa, E. Matsubara
      Abstract: We demonstrated high-resolution element-specific diffraction microscopy using a hard X-ray beam focused by Kirkpatrick–Baez mirrors. Coherent diffraction patterns of an Au/Ag nanoparticle were measured at incident X-ray energies around the Au LIII absorption edge. By calculating the difference between the intensities of reconstructed images obtained at different energies, an image of the Au element could be derived. From the difference image, it was suggested that the replacement reaction progresses from the corners of Ag cubic particle.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000013
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Valence band of Co/Cu thin film studied with synchrotron radiation
           photoemission spectroscopy
    • Authors: Soma Banik; S. K. Deb, S. Barman, G. P. Das, D. M. Phase, S. K. Rai
      Abstract: The electronic structure of Co (100 Å)/Cu (50 Å) bilayer film on Si(100) has been investigated using valence band photoemission at 50 eV. The aim is to understand the Co/Cu interface and the nature of intermixing in Co and Cu layers. The valence band of Co/Cu interface shows three features at −0.3, −1.17 and −1.9 eV binding energy. The experimental observations are explained with the help of calculations based on projected augmented wave pseudopotential method using density functional theory. The origin of −0.3 eV feature is mainly due to the Co 3d minority spin states while the features at −1.17 and −1.9 eV are due to the formation of Co and Co–Cu mixed nanoclusters at the interface.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000050
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • 2Ge2+studied+by+resonant+and+angle-resolved+photoemission+spectroscopy&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Banik&rft.aufirst=Soma&rft.au=Soma+Banik&rft.au=S.+K.+Deb,+A.+Chakrabarti,+A.+Thamizhavel,+D.+M.+Phase,+S.+N.+Jha&rft_id=info:doi/10.1017/S2044820111000062">Electronic structure of CeAg2Ge2 studied by resonant and angle-resolved
           photoemission spectroscopy
    • Authors: Soma Banik; S. K. Deb, A. Chakrabarti, A. Thamizhavel, D. M. Phase, S. N. Jha
      Abstract: The electronic structure of CeAg2Ge2 single crystal has been investigated by using resonant valence band photoemission and angle-resolved photoemission spectroscopy at different photon energies. Resonant photoemission has been observed near the 4d threshold of Ce at 121 eV. The constant initial state spectra show two photoemission features having 4f character near the Fermi level that exhibits Fano-like sharp resonance profile. Experimental energy bands have been mapped from the normal-emission photoelectron spectra of CeAg2Ge2 (001) surface along the Γ–Z direction. Four photoemission features are observed to show the dispersion related to the Ce 4f states and the hybridized Ag 4d with Ge 4p states. The experimental spectra have been interpreted with the help of calculations based on full potential linear augmented plane wave method using density functional theory.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000062
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Interfacial electronic structures at Fe/pentacene/Fe interfaces
    • Authors: Yu-Zhan Wang; Xing-Yu Gao, Andrew Wee, Dong-Chen Qi, Shi Chen
      Abstract: We investigate the interfacial electronic structures of the heterojunction Fe/pentacene/Fe on Cu(100) substrate, using synchrotron-based photoemission spectroscopy. No chemical reaction is observed at either Fe/pentacene or pentacene/Fe interface. The hole injection barrier was estimated to be about 0.95 eV between pentacene and under the Fe thin film. C K-edge NEXAFS revealed that the long axis of pentacene molecule was almost perpendicular to the surface plane. With increasing Fe thickness deposited on pentacene film, the pentacene's HOMO shifts to higher binding energy whereas the C 1s binding energy showed an interesting unusual behaviour due to the initial band bending gradually suppressed by the increasing core-hole screening effect.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000049
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • XMCD study of the induced magnetic moment in non-magnetic Ga and Ge atoms
           in intermetallic compounds
    • Authors: R. Boada; C. Piquer, M. A. Laguna-Marco, J. Chaboy
      Abstract: In the past few years, we have witnessed the appearance of exotic magnetism of atoms in nano-scaled systems associated with compounds that are non-magnetic in their bulk form. Different models ranging from orbital magnetism delocalized over the whole molecule to localized one associated to the modification of the electronic structure have been proposed. Hence, one of the main challenges is to determine the mechanism that induces both the magnetic moment and the exchange interactions, leading to the ferromagnetic-like behaviour in these nanostructures. Aimed at obtaining a deeper insight into the induction of magnetic moments on nominally non-magnetic atoms, we have performed an XMCD study on rare-earth–iron Laves phase compounds containing Ga or Ge. XMCD probes the magnetic polarization of both Ga and Ge in these compounds. Our results show that when the rare-earth (R) is non-magnetic this polarization is uniquely due to the hybridization with the Fe neighbours, while it is enhanced when R is magnetic due to the Fe–R hybridization. As a consequence, the magnetic polarization of both Ge and Ga atoms differs as this hybridization does.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000025
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • New X-ray absorption fine structure measurement system under atmospheric
           pressure in the soft X-ray region at SAGA Light Source
    • Authors: Toshihiro Okajima; Ryota Ohtani
      Abstract: A new X-ray absorption fine structure (XAFS) measurement system under atmospheric pressure in the soft X-ray region has been installed at the beamline BL11 of Saga Light Source (SAGA-LS) in Japan. XAFS spectra in the lower photon energy region of about 2–4 keV could be newly obtained at the beamline. The system was applied to obtain sulphur K-edge XAFS spectra of solid and oily specimens using fluorescence yield and electron yield modes. The spectra were successfully collected. We anticipate that this new system will have various applications in environmental and biochemical research.
      PubDate: 2011-03-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000037
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Instrumentation for structure measurements on highly non-equilibrium
           materials
    • Authors: J. K. R. Weber; C. J. Benmore, M. C. Wilding, J. Neuefeind, J. B. Parise
      Abstract: Containerless techniques (levitation) completely eliminate contact with the sample. This unique sample environment allows deep supercooling of many liquids and avoids contamination of high-temperature melts. Recent experiments at the Advanced Photon Source (APS) high-energy beamline 11 ID-C used aerodynamic levitation with laser beam heating and acoustic levitation with cryogenic cooling. By using these two methods, liquids were studied over much of the temperature range from −40 to +2500°C. This paper briefly describes the instrumentation and its use and is illustrated with examples of measurements on molten oxides and low-temperature liquids.
      PubDate: 2011-02-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000080
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • In+situ+measurement+of+the+structure+of+supercooled+oxide+liquids&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Wilding&rft.aufirst=M.&rft.au=M.+Wilding&rft.au=C.+J.+Benmore,+J.+K.+R.+Weber,+J.+B.+Parise&rft_id=info:doi/10.1017/S2044820111000074">In situ measurement of the structure of
           supercooled oxide liquids
    • Authors: M. Wilding; C. J. Benmore, J. K. R. Weber, J. B. Parise
      Abstract: This paper will describe the results of in situ high-energy X-ray measurements performed on stable and supercooled oxide liquids using containerless techniques. As will be discussed in the companion paper (Weber et al.), the use of an aerodynamic levitator furnace with laser heating allows the structures of refractory oxide liquids to be probed. Because of the contactless nature of this sample environment liquids can be deeply supercooled, and this provides opportunities to study the metastable structures of supercooled liquids. Of particular interest are the so-called fragile liquids that depart from Arrhenius-law viscosity behaviour and that, by definition, have temperature-dependent structures. The focus of this paper is the study of two oxide systems, MgO–SiO2 and Al2O3–SiO2. These two liquids have highly disordered stable liquid structures that differ substantially from the structures of the equivalent glasses. We present data showing how these structures change when supercooled and demonstrate dramatic changes in short-range (coordination number) and intermediate-range order during vitrification. These data have been collected by isothermal measurement and also fast quenching methods using the recently developed method of rapid acquisition using a Perkin Elmer amorphous silicon flat panel detector; this gives a large Q coverage for incident energies of >115 keV. The rapid data acquisition enables the vitrification process to be observed directly.
      PubDate: 2011-02-01T00:00:00.000Z
      DOI: 10.1017/S2044820111000074
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Investigation of minute strain in silicon on insulator and
           strained-silicon/silicon–germanium/silicon-substrate semiconductor
           materials using a synchrotron radiation X-ray microbeam
    • Authors: J. Matsui; Y. Tsusaka, H. Takano, Y. Kagoshima, T. Senda, K. Izunome, T. Horikawa, Y. Urushihara, K. Yokoyama
      Abstract: Strain in silicon on insulator (SOI) and strained-silicon(s-Si)/silicon–germanium (SiGe)/Si-substrate crystals is analysed by means of synchrotron X-ray microbeam diffraction. It is found that strain features of the s-Si/SiGe/Si crystals are much different from those of SOI crystals from the lattice tilt and lattice parameter distribution points of view. The two-dimensional lattice tilt maps obtained by scanning the synchrotron X-ray microbeam of about 1 μm in size on the sample surface are useful to study local strain distribution in those materials.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000821
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • 3-edge+resonant+elastic+X-ray+scattering+study+of+orbital+ordering+in+ErVO3&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Ikeuchi&rft.aufirst=K.&rft.au=K.+Ikeuchi&rft.au=H.+Nakao,+Y.+Murakami,+S.+Miyasaka,+Y.+Tokura&rft_id=info:doi/10.1017/S2044820110000833">Er L3-edge resonant elastic X-ray scattering study of orbital ordering in
           ErVO3
    • Authors: K. Ikeuchi; H. Nakao, Y. Murakami, S. Miyasaka, Y. Tokura
      Abstract: Resonant elastic X-ray scattering (RXS) at the erbium absorption edge was investigated in the orbital-ordered compound ErVO3. An RXS signal resonating near the Er L3-edge was clearly observed at (1 0 0). Using this signal, we studied the relation between the anisotropy of the Er 5d orbital and the V 3d orbital ordering because the covalency between the Er 5d and V 3d orbitals is expected to stabilize the C-type orbital ordering of the V 3d electrons.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000833
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Non-destructive measurement of the depth profile of the constituent in
           iron oxide scale by X-ray diffraction at SPring-8
    • Authors: M. Sato; T. Doi, Y. Hidaka, Y. Higashida, Y. Masaki, N. Otsuka
      Abstract: The depth profiles of the constituent in iron oxide scales were investigated by X-ray diffraction measurement with controlling X-ray penetration depth at SPring-8. We successfully observed the interface region of scales non-destructively using X-ray with energy of 28 keV. The results indicated that the volume fraction ratio of Fe3O4 to FeO around the surface of samples increased by isothermal heat treatment. This suggested that the transformation of FeO to Fe3O4 due to isothermal heat treatment proceeds from surface into the inside of scale.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000845
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Multivariate statistical methods in the forensic investigation of the
           post-blast residues measured by Fourier transform infrared spectroscopy
    • Authors: K. Banas; A. Banas, H. O. Moser, M. Bahou, M. Cholewa, P. Yang, S. K. Lim
      Abstract: Fourier transform infrared (FTIR) spectroscopy has gained significant attention among the forensic scientists because it shows high sensitivity and selectivity, and offers near-real-time detection. Application of the multivariate statistical techniques for the analysis of the spectra is necessary in order to enable feature extraction, proper evaluation and identification of obtained spectra. In this paper we show the development of a feasible procedure for the characterization of spectroscopic signatures of the explosive materials in the remnants after explosion. In our research especially designed and prepared sample catchers were used during the blasts of three various high explosives: C-4, TNT and PETN. Principal component analysis (PCA) was performed using broad spectral data range (600–4000 cm−1) for sample classification into separate classes. Most of the information contained in spectral data was compressed by PCA in few relevant principal components that explain most of the variance of spectral data. The results show that FTIR spectroscopy in combination with multivariate methods are well suited for identification and differentiation purposes even in very large data sets and could be employed by forensic laboratories for rapid screening analysis.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000900
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Reflected extended X-ray absorption fine structure study of the surface
           region of layered samples
    • Authors: A. Muñoz-Páez; V. López-Flores, S. Díaz-Moreno, D. T. Bowron, S. Ramos, S. Ansell
      Abstract: We present preliminary reflection extended X-ray absorption fine structure results on reactive magnetron sputtering molybdenum nitride (MoN) layered samples, with different compositions and surface layer thickness. The results obtained over a wide range of incidence angles show significant differences between two samples where the outer layer is either Mo metal or MoN.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000912
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Study of metallic pieces from the Andalusian baroque period with micro
           X-ray diffraction and micro X-ray fluorescence
    • Authors: A. Muñoz-Páez; L. K. Herrera, A. Justo, J. A. Sans, G. Martínez-Criado
      Abstract: Within the framework of a wide study of pieces of cultural heritage from the Andalusian baroque period, synchrotron radiation techniques were used to characterize the metallic parts of mirrors and musical organ pipes. By using X-ray fluorescence (XRF) and X-ray diffraction (XRD) with micrometre resolution information was obtained which was relevant either in the conservation or in the identification of these pieces. By monitoring with micro X-ray diffraction (μXRD) the degradation process of the amalgam of the mirrors, the evolution of the corrosion products could be followed. The identification and distribution of trace elements of tin and lead phases forming the organ metal pipes was carried out with the aid of micro X-ray fluorescence (μXRF). This technique allowed for the quantification of the elemental distributions in the major and minor components, knowledge useful to improve the manufacture of modern musical organs.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000924
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Modelling and design of the coherence and imaging beamline I13L at the
           Diamond Light Source
    • Authors: U. H. Wagner; Z. D. Pešić, C. Rau
      Abstract: I13L is a 250 m long hard X-ray beamline (6–30 keV) currently under construction at the Diamond Light Source. The beamline comprises two independent experimental endstations: one for imaging in direct space using X-ray microscopy and one for imaging in reciprocal space using coherent diffraction-based imaging techniques. This paper will discuss the coherence branch, where well-defined coherence properties and preservation of the coherent flux are important. We will demonstrate the impact of optical components and stability onto the beamline performance, using phase-space-based ray-tracing techniques. The implications onto the beamline design will be demonstrated using our in-house build quadruple crystal monochromator as an example.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000894
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Kyushu University Beamline, BL06, at SAGA Light Source
    • Authors: S. Yoshioka; T. Ishioka, H. Okabe, A. Harata, Y. Sejima, K. Hara, T. Okajima
      Abstract: Kyushu University has installed the hard X-ray beamline, BL06, at bending magnet source of SAGA Light Source in Japan. It is designed for X-ray absorption fine structure (XAFS) spectroscopy and small-angle X-ray scattering (SAXS) experiments. The X-ray energy covered by the beamline ranges from 2.1 to 23 keV using a Si(111) flat double-crystal monochromator. Two bent cylindrical-type focusing mirrors are used, each with a different focal point. They are set in the optics section and can be used independently. One of the mirrors has a focal distance of 6 m, which corresponds to the sample stage for XAFS experiments, while the second mirror focuses at 10 m, corresponding to the detector for the SAXS experiments. The photon flux measured by the ion chamber at mirror focal point is 1010 phs/s. The experimental hutch houses the detection equipment for both XAFS and SAXS. For XAFS studies, a set of ion chambers for transmission mode and a Lytle detector and a Si drift detector for fluorescence yield mode are available. For SAXS studies, the camera pass length can be chosen from 0.5 to 2.5 m with 0.5 m increments in between, and an image plate is operated as signal detector. The beamline will be opened for user operation around summer 2010.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000857
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • operando+X-ray+absorption+spectroscopy+in+heterogeneous+catalysis&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Rochet&rft.aufirst=A.&rft.au=A.+Rochet&rft.au=V.+Moizan,+V.+Briois,+C.+Pichon&rft_id=info:doi/10.1017/S2044820110000869">Design of a high-pressure and high-temperature cell for operando X-ray
           absorption spectroscopy in heterogeneous catalysis
    • Authors: A. Rochet; V. Moizan, V. Briois, C. Pichon
      Abstract: A new X-ray absorption cell dedicated to in situ and operando experiments in heterogeneous catalysis has been built and tested. It allows measurement of X-ray absorption spectroscopy (XAS) spectra in transmission mode under the flow of various gas mixtures at elevated temperatures (600°C) and pressures (50 bar). The working conditions are representative of phenomena that take place in fixed bed reactors.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000869
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • 2-bonded+carbon+in+diamond+using+optically+detected+X-ray+absorption+spectroscopy&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Jones&rft.aufirst=G.&rft.au=G.+O.+Jones&rft.au=O.+R.+Roberts,+G.+T.+Williams,+D.+P.+Langstaff,+N.+R.+J.+Poolton,+P.+Martineau,+D.+Fisher,+S.+Lawson,+D.+A.+Evans&rft_id=info:doi/10.1017/S2044820110000936">Detecting sp2-bonded carbon in diamond using optically detected X-ray
           absorption spectroscopy
    • Authors: G. O. Jones; O. R. Roberts, G. T. Williams, D. P. Langstaff, N. R. J. Poolton, P. Martineau, D. Fisher, S. Lawson, D. A. Evans
      Abstract: Optically detected X-ray absorption spectroscopy (ODXAS) and X-ray excited optical luminescence (XEOL) have been applied in parallel to the study of local bonding in luminescent diamonds. Imaging ODXAS and XEOL reveal correlations between lateral variation in colour (transmitted light and luminescence) and local carbon bonding in selected samples showing strong optical absorption contrast. Dark regions of the crystals viewed in transmitted light correlate with a lower total luminescence yield when excited with soft X-rays of photon energy ~280 eV. ODXAS reveals a higher proportion of sp2-bonded carbon species in darker (less luminescent) regions associated with graphitic micro-inclusions.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000936
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • μ-EXAFS+and+μ-XRD+study+of+selected+regions+of+a+Al–Fe–Cr–Ti+complex+alloy&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2011&rft.volume=1&rft.aulast=Liotti&rft.aufirst=E.&rft.au=E.+Liotti&rft.au=S.+C.+Hogg,+C.A.+Kirk,+P.+Quinn,+P.+S.+Grant&rft_id=info:doi/10.1017/S2044820110000870">μ-EXAFS and μ-XRD study of selected regions of a Al–Fe–Cr–Ti
           complex alloy
    • Authors: E. Liotti; S. C. Hogg, C.A. Kirk, P. Quinn, P. S. Grant
      Abstract: Al3Ti, Al13Cr2 and Al13Fe4 are important intermetallics in a number of Al alloy systems including complex ultra-high-strength systems with excellent elevated-temperature performance. A full knowledge of their properties and crystallographic structures is a key factor for the understanding of these complex alloys. In the present study samples of the three pure intermetallics were prepared and regions of interest identified in a billet of Al93Fe3Cr2Ti2 alloys and 20 × 10 × 2 µm samples extracted utilizing a Focussed Ion Beam Transmission Electron Microscopy (FIB TEM) sample preparation technique. Using the microfocus spectroscopy beamline I18 at Diamond Light Source we were able to examine 5 µm sections of the samples using X-ray Diffraction (μ-XRD) and Extended X-ray Absorption Fine Structure (μ-EXAFS) in an attempt to describe the local structure of the second-phase particles and characterized the microstructure of the FIBed samples to selectively illuminate the different phases.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000870
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • High-resolution synchrotron X-ray diffraction studies of size and strain
           effects in a complex Al–Fe–Cr–Ti alloy
    • Authors: S. C. Hogg; E. Liotti, C. A. Kirk, S. P. Thompson, J. E. Parker, P. S. Grant
      Abstract: We present a study of a complex ultra-high-strength Al alloy containing ~40 volume per cent of second-phase particles, ranging in size from nanometres to a few microns. The microstructure has been investigated using scanning electron microscopy and high-resolution synchrotron X-ray diffraction using the I11 beam line at the Diamond Light Source, UK. Powder diffraction was carried out to (i) determine phases present, (ii) quantify the weight per cent of each phase and (iii) quantify size and strain effects in the Al matrix. The high beam quality (i.e. low divergence and wavelength purity) and multi-analysing crystal detectors makes this an ideal instrument to resolve the high peak density and determine the contribution of sample broadening in the complex alloy. Using Pawley and Rietveld full pattern fitting, the intermetallic phases present were determined to be Al3Ti, Al13Cr2 and Al13Fe4. The weight fraction of each phase was calculated from the Rietveld refinements and correlated well with thermodynamic calculations assuming an equilibrium microstructure. Size and strain in the Al matrix was measured from peak broadening using a Double Voigt analysis and showed significant physical broadening due to both size and strain.
      PubDate: 2011-01-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000882
      Issue No: Vol. 1, No. SRMS-7 (2011)
       
  • Emerging material – salient properties of the terahertz meta-foil
    • Authors: H. O. Moser; L. K. Jian, H. S. Chen, S. M. P. Kalaiselvi, S. Virasawmy, X. X. Cheng, W. Zhang, A. Banas, K. Banas, S. P. Heussler, W. Hua, B.-I. Wu, Z. Yi
      Abstract: The meta-foil is an all-metal self-supported electromagnetic metamaterial that features a space-grid that is locally stiff, yet globally flexible. Owing to its mechanical, thermal, chemical and radiative robustness, it lends itself to widespread applications.
      PubDate: 2010-11-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000535
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Crystallinity estimation of area-selective Ge epitaxial layer grown on Si
           substrate by means of high-resolution X-ray microdiffraction
    • Authors: Y. Tsusaka; H. Takano, Y. Kagoshima, J. Matsui, S. Park, Y. Ishikawa, K. Wada
      Abstract: Crystallinity of area-selective Ge layer with a (0 0 1) surface grown on Si substrate has been investigated by means of diffractometry using a parallel X-ray microbeam. The measured lattice parameters of 〈0 0 1〉 direction were about 0.17% smaller than that of bulk Ge crystal. This tensile strain value was almost the same as the simulated ones that used the finite-element method.
      PubDate: 2010-11-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000559
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • B18: What can the new core X-ray absorption spectroscopy beamline at
           Diamond do'
    • Authors: S. Ramos; G. Cibin, S. Parry, S. M. Scott, L. Varandas, M. R. Pearson, M. Gerring, R. Woolliscroft, L. Hudson, P. E. Robbins, A. Marsh, D. Hawkins, R. Deshmukh, S. Alexander, A. J. Dent, N. A. Krumpa, A. D. Smith
      Abstract: The new Core-XAS (X-ray absorption spectroscopy) beamline (B18) at Diamond aims to provide a reliable spectrometer for a broad scientific community. With this in mind, B18 has been built as a general-purpose beamline and offers to users a variety of sample environments and detection methods. Here we will present the first commissioning results and some of the capabilities of this versatile instrument.
      PubDate: 2010-11-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000560
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Polyamorphism and the universal liquid–liquid critical point in the
           supercooled state
    • Authors: G.N. Greaves
      Abstract: The physics of critical phenomena is well established in systems as diverse as molecular fluids, crystalline alloys and magnetic materials. As the critical point is approached, the susceptibility increases anomalously and fluctuations give rise to dramatic opalescence. Evidence has recently emerged for the existence of a second critical point in the liquid state at supercooled temperatures, below which polyamorphic phases coexist differing in density but sharing the same composition. Whilst much attention has been paid to supercooled water, polyamorphic phases have been observed in many elemental and oxide liquids potentially offering routes to low-entropy glasses. Our recent direct observation of a polyamorphic phase transition in levitated molten yttria–alumina offers the first opportunity to study the associated critical point in a real supercooled system. In situ small-angle X-ray scattering records sharp rises in the average correlation length of density fluctuations and in the compressibility as the transition is approached. Both increases approximate to the universal power-law relations predicted by the three-dimensional Ising model in common with all critical point phenomena. The observation brings the second critical point predicted in liquids into line with other critical phenomena.
      PubDate: 2010-11-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000407
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Residual stress measurement on the I12 JEEP beamline at Diamond Light
           Source
    • Authors: A. M. Korsunsky; X. Song, F. Hofmann, B. Abbey, M. Xie, T. Connolley, C. Reinhard, R. Atwood, L. Connor, M. Drakopoulos
      Abstract: One of the multiple capabilities of the new Joint Engineering, Environmental and Processing (JEEP) beamline I12 at Diamond Light Source is the set-up for polychromatic high-energy X-ray diffraction for the study of polycrystalline deformation and residual stresses. The results and interpretation of the first experiments carried out on JEEP are reported. Energy dispersive diffraction patterns from titanium alloy Ti-6Al-4V were collected using the new 23-cell ‘horseshoe’ detector and interpreted using Pawley refinement to determine the residual elastic strains at the macro- and meso-scale. It provides a clear demonstration of the tensile-compressive hardening asymmetry of the hexagonal close-packed grains oriented with the basal plane perpendicular to the loading direction.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000390
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Synchrotron radiation X-ray diffraction analysis for Bi-based oxide
           superconducting wire
    • Authors: S. Uemura; J. Iihara, Y. Saito, K. Yamaguchi, J. Matsumoto, K. Yamazaki, M. Kikuchi, T. Nakashima, S. Kobayashi, N. Ayai, K. Hayashi, K. Sato
      Abstract: The Bi-based oxide superconducting wire is one of the most promising materials for practical uses such as electric power transmission, electromagnets and so on. For the higher performances required in these applications, it is necessary to increase the critical current (Ic). We have carried out synchrotron radiation X-ray diffraction analysis to improve our manufacturing processes and thus to achieve higher Ic. We have performed in situ X-ray diffraction measurements during the sintering and cooling processes, and observed the decrease of Bi-2223(=(Bi,Pb)2Sr2Ca2Cu3Ox) phase during the cooling process. We have also evaluated the distribution of the crystal orientation in whole wire thickness, by measuring the rocking curves. We have observed that the distribution of the crystal orientation is improved by a refinement of the process conditions.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000444
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Monolithic active pixel sensors for material science beam lines
    • Authors: N. Tartoni; J. Marchal
      Abstract: The limiting factor to the exploitation of the huge photon flux produced by a third-generation synchrotron light source is very often the detector. Experiments in material science often exploit X-ray diffraction. A fast and efficient detection of diffraction patterns enables dynamic experiments. Monolithic active pixel sensors (MAPS) can be exploited effectively to build fast and efficient detectors for X-ray diffraction. For its material science beam lines Diamond Light Source is developing and evaluating detectors based on commercial MAPS and MAPS developed for scientific applications. The various projects, target performance and some experimental results are reported in this paper.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000511
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • X-ray diffraction study of a Si Σ13 symmetric tilt grain boundary
    • Authors: S. D. Rhead; P. B. Howes, M. Roy, J. L. Rawle, C. Nicklin, C. Norris
      Abstract: We present an X-ray diffraction study of a semiconductor symmetric tilt grain boundary. The theory of crystal truncation rod scattering is extended to bicrystal interfaces and compared with experimental data measured at the Diamond Light Source.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000523
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • in+situ+photoelectron+spectroscopy&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2010&rft.volume=1&rft.aulast=Langstaff&rft.aufirst=D.&rft.au=D.+P.+Langstaff&rft.au=O.+R.+Roberts,+G.+T.+Williams,+D.+A.+Evans&rft_id=info:doi/10.1017/S2044820110000456">A system for real-time in situ photoelectron
           spectroscopy
    • Authors: D. P. Langstaff; O. R. Roberts, G. T. Williams, D. A. Evans
      Abstract: A system is presented which combines photoelectron spectroscopy with complementary characterization techniques in order to provide in situ analysis of surfaces processes. The real-time capability of photoelectron spectroscopy has been enabled by an electron counting array detector that allows core and valence level spectra to be recorded in 1–10 s using a laboratory X-ray source and as low as 25 ms when coupled to synchrotron radiation source.The efficient detection system is combined with a versatile heater stage, temperature and vacuum monitoring, and controllable evaporation sources in order to monitor chemical, structural and electronic changes in situ. The heated stage allows a range of programmed heating and cooling regimes to be applied to samples. Evaporation sources are provided for medium-temperature materials such as small organic molecules and high-temperature metals such as aluminium. The system has a linked vacuum vessel for plasma etching and Ar ion sputtering for surface preparation.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000456
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Combined micro-beam Laue and white beam topography: mapping local lattice
           orientation and misorientation
    • Authors: F. Hofmann; A. M. Korsunsky, B. Abbey, I. Dolbnya, M. Xie, X. Song
      Abstract: Micro-beam Laue diffraction is a well-established technique to determine lattice orientation and lattice structure. A polychromatic X-ray beam is used to illuminate a scattering volume within individual crystallites. The resulting diffraction pattern consists of a number of Laue spots. By refinement of the exact spot positions, lattice orientation and deviatoric elastic strain of the single crystalline scattering volume can be determined. Diffraction spot shape is linked to the orientation spread in the scattering volume arising due to the local dislocation structure. However, angular resolution of Laue diffraction spots is limited due to small sample-to-detector distance (~100 mm) and large Laue camera pixel size (~40 µm). In contrast, X-ray diffraction topography allows high-resolution imaging of an individual reflection from a crystal. On beamline B16 at the Diamond Light Source, we have combined micro-beam Laue diffraction with simultaneous collection of diffraction topographs, using a second high-resolution X-ray camera in the far field. In situ deformation of a single grain within a thin Ni foil has been studied using this setup. While detailed analysis is ongoing, some early results are presented here to allow an assessment of the technique's utility and future development possibilities.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000468
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • X-ray Fourier transform holography using separated holography-mask
    • Authors: N. Awaji; K. Nomura, S. Doi, S. Isogami, M. Tsunoda, K. Kodama, M. Suzuki, T. Nakamura
      Abstract: We studied X-ray Fourier transform holography using separated holography-mask and sample geometry. The method was successfully applied to the imaging of the magnetic nanostructure using soft X-ray in addition to the cross-sectional imaging of Cu interconnect lines using hard X-ray.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S204482011000047X
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Recent advances in the study of thermal effects on EXAFS
    • Authors: P. Fornasini
      Abstract: Understanding the effects of thermal disorder on extended X-ray absorption fine structure increases the accuracy of results and allows one to gain original insights on local dynamical properties. Some recent advances are reviewed here.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000481
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • RVO3&rft.title=Diamond+Light+Source+Proceedings&rft.issn=2044-8201&rft.date=2010&rft.volume=1&rft.aulast=Nakao&rft.aufirst=H.&rft.au=H.+Nakao&rft.au=D.+Bizen,+N.+Shirane,+K.+Ikeuchi,+Y.+Murakami,+J.+Fujioka,+T.+Yasue,+S.+Miyasaka,+Y.+Tokura&rft_id=info:doi/10.1017/S2044820110000493">Resonant X-ray scattering study of perovskite-type vanadate RVO3
    • Authors: H. Nakao; D. Bizen, N. Shirane, K. Ikeuchi, Y. Murakami, J. Fujioka, T. Yasue, S. Miyasaka, Y. Tokura
      Abstract: The orbital ordering in perovskite-type vanadium oxides, RVO3 (R: rare earth), has been investigated by resonant X-ray scattering (RXS) near the V K-edge energy. The G-type orbital order, C-type orbital order and orbital disorder phases are elucidated on the basis of the azimuthal-angle and polarization dependence of the RXS signal reflecting the orbital ordering.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000493
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Development and performance of a versatile soft X-ray polarimeter
    • Authors: H. Wang; U. H. Wagner, S. S. Dhesi, K. J. S. Sawhney, F. Maccherozzi, G. van der Laan, M. A. MacDonald, I. B. Poole, F. M. Quinn, C. J. Latimer
      Abstract: With modern undulators generating light of an arbitrary polarization state, experiments exploiting this feature in the soft X-ray region are becoming increasingly widespread. Circularly polarized light in the soft X-ray region is of particular interest to investigate of magnetic metals such as Fe, Co and Ni, and the rare earths. A versatile multilayer polarimeter has been designed and developed to characterize the polarization state of the soft X-ray beam. A W/B4C multilayer transmission phase retarder and reflection analyser has been used for polarimetry measurements on the beamline (I06) at Diamond Light Source. The design details of the polarimeter and preliminary polarimetry results are presented.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S204482011000050X
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Optical study of pressure-induced insulator-to-metal transitions in
           correlated electron systems
    • Authors: A. Perucchi; L. Baldassarre, C. Marini, P. Postorino, S. Lupi
      Abstract: Understanding the physics of strongly correlated systems is one of the most challenging tasks of condensed matter research. Besides displaying extremely interesting physical behaviour, their sensitivity to small changes in external parameters makes them highly appealing for future technological applications. That sensitivity is attributed to the small value of the electron bandwidth W in comparison with other relevant energy scales such as the electron correlation U or the charge transfer (CT) energy gap Δ. While being a challenging experimental technique, the application of high pressure (HP) through a diamond anvil cell (DAC) permits to tune the bandwidth W continuously and without introducing impurities or disorder. Because of the small throughput of DACs, infrared (IR) measurements at HP take great advantage of the use of a high-brightness source as a synchrotron IR source (Lupi et al. 2007). We review here our latest results on several correlated insulators of the Mott–Hubbard and CT type.
      PubDate: 2010-10-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000419
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Micro-scale characterization of deformation and distortion in ductile
           (poly)crystals by synchrotron X-ray beams
    • Authors: Alexander M. Korsunsky; Brian Abbey, Felix Hofmann, Igor Dolbnya, Steve P. Collins, Mengyin Xie, Xu Song
      Abstract: Most engineering structural metallic alloys are used in polycrystalline form. The nature of the mechanical response of these systems is complex and hierarchical, spanning a range of scales. Lattice strains, distortions and defects (notably, dislocations) nucleate, interact, pile up at grain boundaries and self-organize at the (sub)micrometre scale. Individual grains experience strong interactions with their neighbours and geometric features (cracks, notches). Groups of grains sharing common orientation find themselves embedded within large ensembles possessing certain statistical properties (size distributions, preferred orientation, etc.). Ultimately, the macroscopic properties of grain aggregates are determined by this hierarchy of interactions. Notably, while collective properties such as stiffness are relatively well represented by averages, strength properties associated with fracture, fatigue crack propagation, creep and damage show a strong dependence on the local microscopic conditions of the ‘weakest link’. Ongoing improvements in the spatial resolution of X-ray imaging and tomography and the availability of micro-focused X-ray beams open up a number of opportunities for the study of the structure and deformation at (sub)micrometre scales. Fundamental questions concerning the scale dependence and strain gradient effects in solids can now be tackled by the combination of synchrotron X-ray methods and suitably refined deformation modelling. In this study, a range of methodologies and experimental configurations are presented that have allowed us to develop improved insight into the physical mechanisms of plastic deformation in ductile metallic alloys. Examples include white-beam energy-dispersive diffraction, micro-beam Laue diffraction, scanning micro-beam diffraction topography, high-resolution reciprocal space mapping and imaging. Connections are established with advanced numerical models of polycrystal deformation using strain gradient plasticity and discrete dislocation dynamics modelling.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000031
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Detector commissioning and development for PETRA-III
    • Authors: David Pennicard; Heinz Graafsma, Michael Lohmann
      Abstract: The new synchrotron light source PETRA-III produced its first beam last year. The extremely high brilliance of PETRA-III and the large energy range of many of its beamlines make it useful for a wide range of experiments, particularly in materials science. The detectors at PETRA-III will need to meet several requirements, such as operation across a wide dynamic range, high-speed readout and good quantum efficiency even at high photon energies. PETRA-III beamlines with lower photon energies will typically be equipped with photon-counting silicon detectors for two-dimensional detection and silicon drift detectors for spectroscopy and higher-energy beamlines will use scintillators coupled to cameras or photomultiplier tubes. Longer-term developments include ‘high-Z’ semiconductors for detecting high-energy X-rays, photon-counting readout chips with smaller pixels and higher frame rates and pixellated avalanche photodiodes for time-resolved experiments.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000043
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Design of the experimental stage for coherent diffraction imaging
    • Authors: Z. D. Pešić; U. H. Wagner, C. Rau
      Abstract: The I13 beamline of Diamond Light Source encompasses two fully independent branches devoted for coherent imaging experiments (coherent X-ray diffraction and ptychography) and X-ray imaging and tomography (full-field microscopy and in-line phase contrast imaging). This contributed paper outlines the main features of the coherence beamline and a preliminary design of the experimental station for coherent X-ray diffraction imaging.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000079
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • B23 circular dichroism beamline at the Diamond Light Source
    • Authors: Giuliano Siligardi; Rohanah Hussain, Daniel Myatt, Tamás Jávorfi
      Abstract: Circular dichroism spectroscopy is a useful and versatile tool to obtain low-resolution structural information about proteins, biopolymers and other chiral materials in solution. The first UV–VIS beamline dedicated to circular dichroism, B23, at Diamond Light Source Ltd., a third-generation synchrotron facility in the UK, has recently become operational and is now available for the user community. Herein we summarize the main characteristics of the beamline and some possible applications.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000092
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Microprobe X-ray studies of thermal spray coatings
    • Authors: P. D. Quinn; J. F. W. Mosselmans, D. G. McCartney, D. Zhang
      Abstract: Thermal spraying is emerging as the leading route for the deposition of protective coatings onto engineering components to improve operation under extreme conditions of temperature, wear or corrosion. Detailed microstructural assessment is a key element in improving coating performance, and this study demonstrates the application of microfocus X-ray techniques to the determination of elemental and structural variations in the coatings.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000067
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
  • Crystal structure of quenched and in-field electroluminescent phosphors
    • Authors: G. R. Fern; T. Ireland, P. Harris, J. Silver, R. Withnall, A. Salimian, P. K. Santra, M. Leoni, A. Erko, A. Lennie, C. C. Tang
      Abstract: Electroluminescent zinc sulfide doped with copper and chloride (ZnS:Cu, Cl) powder was heated to 400°C and rapidly quenched to room temperature. Comparison between the quenched and non-quenched phosphors using synchrotron radiation X-ray powder diffraction (XRPD) (λ = 0.828692 Å) and X-ray absorption spectroscopy (XAS) was made. XRPD shows that the expected highly faulted structure is observed with excellent resolution out to 150° 2θ (or to (12 2 2) of the sphalerite phase). The quenched sample compared to the unheated sample shows a large change in peak ratios between 46.7° and 46.9°, which is thought to correspond to the wurtzite (0 0 6), (0 3 2) and sphalerite (3 3 3)/(5 1 1) peaks. Hence, a large proportion of this sphalerite diffraction is lost from the material upon rapid quenching, but not when the material is allowed to cool slowly. The Zn K-edge XAS data indicate that the crystalline structures are indistinguishable using this technique, but do give an indication that the electronic structure has altered due to changing intensity of the white line. It is noted that the blue electroluminescence (EL) emission bands are lost upon quenching: however, a large amount of total EL emission intensity is also removed, which is consistent with our findings. We report the XRPD of a working alternating-current electroluminescence device in the synchrotron X-ray beam, which exhibits a new diffraction pattern when the device is powered in an AC field even though the phosphor is fixed in the binder. Significantly, only a few crystals are required to yield the diffraction data because of the high flux X-ray source. These in panel data show multiple sharp diffraction lines spread out under the region, where capillary data show broad diffraction intensity indicating that the phosphor powder is comprised of unique crystals, each having different structures.
      PubDate: 2010-09-01T00:00:00.000Z
      DOI: 10.1017/S2044820110000055
      Issue No: Vol. 1, No. SRMS-7 (2010)
       
 
 
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