Subjects -> MANUFACTURING AND TECHNOLOGY (Total: 363 journals)
    - CERAMICS, GLASS AND POTTERY (31 journals)
    - MACHINERY (34 journals)
    - MANUFACTURING AND TECHNOLOGY (223 journals)
    - METROLOGY AND STANDARDIZATION (6 journals)
    - PACKAGING (19 journals)
    - PAINTS AND PROTECTIVE COATINGS (4 journals)
    - PLASTICS (42 journals)
    - RUBBER (4 journals)

MANUFACTURING AND TECHNOLOGY (223 journals)                  1 2     

Showing 1 - 73 of 73 Journals sorted alphabetically
3D Printing and Additive Manufacturing     Full-text available via subscription   (Followers: 27)
Additive Manufacturing     Hybrid Journal   (Followers: 18)
Additive Manufacturing Letters     Open Access   (Followers: 3)
Advanced Composites and Hybrid Materials     Hybrid Journal   (Followers: 2)
Advanced Industrial and Engineering Polymer Research     Open Access   (Followers: 4)
Advanced Manufacturing: Polymer & Composites Science     Open Access   (Followers: 38)
Advances in Adaptive Data Analysis     Hybrid Journal   (Followers: 9)
Advances in Industrial and Manufacturing Engineering     Open Access   (Followers: 3)
Advances in Manufacturing     Hybrid Journal   (Followers: 9)
Advances in Manufacturing Science and Technology     Open Access   (Followers: 10)
Advances in Materials and Processing Technologies     Hybrid Journal   (Followers: 1)
Advances in Technology Innovation     Open Access   (Followers: 5)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Sensor Technology     Open Access   (Followers: 2)
Appita Journal: Journal of the Technical Association of the Australian and New Zealand Pulp and Paper Industry     Full-text available via subscription   (Followers: 6)
Applied Ergonomics     Hybrid Journal   (Followers: 17)
Asia Pacific Biotech News     Hybrid Journal   (Followers: 3)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 8)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Behavioral and Cognitive Neuroscience Reviews     Hybrid Journal   (Followers: 25)
Bio-Design and Manufacturing     Hybrid Journal  
Biomanufacturing Reviews     Full-text available via subscription  
Biotechnology     Open Access   (Followers: 7)
Biotechnology Progress     Hybrid Journal   (Followers: 42)
Bulletin of Science, Technology & Society     Hybrid Journal   (Followers: 9)
Centaurus     Hybrid Journal   (Followers: 7)
China Foundry     Open Access  
Circuit World     Hybrid Journal   (Followers: 16)
Clay Technology     Full-text available via subscription  
Cold Regions Science and Technology     Hybrid Journal   (Followers: 2)
Comparative Technology Transfer and Society     Full-text available via subscription   (Followers: 4)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Composites Science and Technology     Hybrid Journal   (Followers: 150)
Computer-Aided Design and Applications     Hybrid Journal   (Followers: 6)
Conference Quality Production Improvement     Open Access  
Control Theory and Informatics     Open Access   (Followers: 9)
Control Theory and Technology     Hybrid Journal   (Followers: 2)
Cryoletters     Full-text available via subscription   (Followers: 4)
Current Protocols in Essential Laboratory Techniques     Full-text available via subscription  
Current Research in Nanotechnology     Open Access   (Followers: 23)
Decision Making : Applications in Management and Engineering     Open Access   (Followers: 1)
Decision Making in Manufacturing and Services     Open Access   (Followers: 2)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 33)
Design Studies     Hybrid Journal   (Followers: 35)
Economics of Innovation and New Technology     Hybrid Journal   (Followers: 19)
Emerging Materials Research     Hybrid Journal   (Followers: 1)
Environmental Technology     Hybrid Journal   (Followers: 2)
Fibers     Open Access   (Followers: 4)
Fibers and Polymers     Full-text available via subscription   (Followers: 4)
Foresight     Hybrid Journal   (Followers: 7)
FORMakademisk - forskningstidsskrift for design og designdidaktikk     Open Access   (Followers: 2)
Futures     Hybrid Journal   (Followers: 15)
Gender, Technology and Development     Hybrid Journal   (Followers: 14)
Green Materials     Hybrid Journal   (Followers: 3)
History and Technology: An International Journal     Hybrid Journal   (Followers: 11)
History of Science and Technology     Open Access   (Followers: 2)
Human Factors in Design     Open Access   (Followers: 8)
i+Diseño : Revista científico-académica internacional de Innovación, Investigación y Desarrollo en Diseño     Open Access  
IEEE Engineering in Medicine and Biology Magazine     Full-text available via subscription   (Followers: 6)
IEEE Open Journal of Nanotechnology     Open Access   (Followers: 1)
IET Collaborative Intelligent Manufacturing     Open Access   (Followers: 1)
IETE Journal of Research     Open Access   (Followers: 10)
IETE Technical Review     Open Access   (Followers: 9)
IFAC Journal of Systems and Control     Hybrid Journal   (Followers: 1)
Indian Journal of Radio & Space Physics (IJRSP)     Open Access   (Followers: 49)
Información Tecnológica     Open Access  
Innovation: Management, Policy & Practice     Hybrid Journal   (Followers: 16)
Innovation: The European Journal of Social Science Research     Hybrid Journal   (Followers: 10)
Innovations : Technology, Governance, Globalization     Hybrid Journal   (Followers: 10)
Integrating Materials and Manufacturing Innovation     Open Access   (Followers: 7)
International Journal for Quality Research     Open Access   (Followers: 4)
International Journal for the History of Engineering and Technology     Hybrid Journal   (Followers: 2)
International Journal of Additive and Subtractive Materials Manufacturing     Hybrid Journal   (Followers: 8)
International Journal of Advanced Design and Manufacturing Technology     Open Access   (Followers: 7)
International Journal of Automation and Logistics     Hybrid Journal   (Followers: 3)
International Journal of Bifurcation and Chaos     Hybrid Journal   (Followers: 4)
International Journal of Business and Systems Research     Hybrid Journal   (Followers: 1)
International Journal of Concrete Technology     Full-text available via subscription  
International Journal of Design     Open Access   (Followers: 24)
International Journal of Design Creativity and Innovation     Hybrid Journal   (Followers: 2)
International Journal of Digital Enterprise Technology     Hybrid Journal   (Followers: 1)
International Journal of Embedded Systems and Emerging Technologies     Full-text available via subscription   (Followers: 3)
International Journal of Energy Technology and Policy     Hybrid Journal   (Followers: 6)
International Journal of Engineering and Manufacturing     Open Access   (Followers: 3)
International Journal of Engineering Materials and Manufacture     Open Access   (Followers: 2)
International Journal of Experimental Design and Process Optimisation     Hybrid Journal   (Followers: 5)
International Journal of Information Acquisition     Hybrid Journal   (Followers: 1)
International Journal of Innovation and Technology Management     Hybrid Journal   (Followers: 10)
International Journal of Innovation Science     Hybrid Journal   (Followers: 9)
International Journal of Instructional Technology and Educational Studies     Open Access   (Followers: 1)
International Journal of Intelligent Transportation Systems Research     Hybrid Journal   (Followers: 13)
International Journal of Law and Information Technology     Hybrid Journal   (Followers: 7)
International Journal of Learning Technology     Hybrid Journal   (Followers: 8)
International Journal of Lightweight Materials and Manufacture     Open Access  
International Journal of Manufacturing Engineering     Open Access   (Followers: 4)
International Journal of Manufacturing, Materials, and Mechanical Engineering     Full-text available via subscription   (Followers: 17)
International journal of materials research     Full-text available via subscription   (Followers: 2)
International Journal of Mathematical Education in Science and Technology     Hybrid Journal   (Followers: 9)
International Journal of Nano and Biomaterials     Hybrid Journal   (Followers: 8)
International Journal of Physical Modelling in Geotechnics     Hybrid Journal   (Followers: 4)
International Journal of Planning and Scheduling     Hybrid Journal   (Followers: 2)
International Journal of Power and Energy Systems     Full-text available via subscription   (Followers: 1)
International Journal of Precision Engineering and Manufacturing-Green Technology     Hybrid Journal   (Followers: 2)
International Journal of Production Management and Engineering     Open Access   (Followers: 4)
International Journal of Quality and Innovation     Hybrid Journal   (Followers: 6)
International Journal of Quality Engineering and Technology     Hybrid Journal   (Followers: 4)
International Journal of Service and Computing Oriented Manufacturing     Hybrid Journal   (Followers: 2)
International Journal of Social and Humanistic Computing     Hybrid Journal  
International Journal of System of Systems Engineering     Hybrid Journal   (Followers: 3)
International Journal of Technoentrepreneurship     Hybrid Journal   (Followers: 1)
International Journal of Technological Learning, Innovation and Development     Hybrid Journal   (Followers: 6)
International Journal of Technology and Design Education     Hybrid Journal   (Followers: 11)
International Journal of Technology and Globalisation     Hybrid Journal   (Followers: 3)
International Journal of Technology Intelligence and Planning     Hybrid Journal  
International Journal of Technology Management     Hybrid Journal   (Followers: 4)
International Journal of Technology Marketing     Hybrid Journal   (Followers: 3)
International Journal of Technology Transfer and Commercialisation     Hybrid Journal   (Followers: 2)
International Journal of Technology, Policy and Management     Hybrid Journal   (Followers: 2)
International Journal of Telecommunications & Emerging Technologies     Full-text available via subscription   (Followers: 1)
International Journal of Vehicle Autonomous Systems     Hybrid Journal  
International Journal of Vehicle Design     Hybrid Journal   (Followers: 6)
International Wood Products Journal     Hybrid Journal   (Followers: 1)
Invention Disclosure     Open Access   (Followers: 1)
ITL - International Journal of Applied Linguistics     Full-text available via subscription   (Followers: 15)
Journal of Analytical Science & Technology     Open Access   (Followers: 4)
Journal of Applied Sciences     Open Access   (Followers: 4)
Journal of Control & Instrumentation     Full-text available via subscription   (Followers: 18)
Journal of Design Research     Hybrid Journal   (Followers: 15)
Journal of Energy, Mechanical, Material and Manufacturing Engineering     Open Access   (Followers: 3)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Enterprise Transformation     Hybrid Journal   (Followers: 1)
Journal of Hazardous Materials Advances     Open Access  
Journal of High Technology Management Research     Hybrid Journal   (Followers: 2)
Journal of Industrial and Production Engineering     Hybrid Journal   (Followers: 4)
Journal of large-scale research facilities JLSRF     Open Access  
Journal of Manufacturing and Materials Processing     Open Access  
Journal of Materials Science Research     Open Access   (Followers: 7)
Journal of Micro-Bio Robotics     Hybrid Journal  
Journal of Micromanufacturing     Hybrid Journal  
Journal of Nanobiotechnology     Open Access   (Followers: 4)
Journal of Operations and Supply Chain Management     Open Access   (Followers: 6)
Journal of Production Research & Management     Full-text available via subscription   (Followers: 3)
Journal of Remanufacturing     Open Access   (Followers: 3)
Journal of Scientific and Industrial Research (JSIR)     Open Access   (Followers: 10)
Journal of Sensor Technology     Open Access   (Followers: 3)
Journal of Sensors and Sensor Systems     Open Access   (Followers: 12)
Journal of Sustainable Metallurgy     Hybrid Journal   (Followers: 3)
Journal of Technological Possibilism     Open Access  
Journal of Technology in Human Services     Hybrid Journal   (Followers: 3)
Journal of Technology Management for Growing Economies     Open Access   (Followers: 3)
Journal of Technology Management in China     Hybrid Journal   (Followers: 1)
Journal of the Chinese Institute of Industrial Engineers     Hybrid Journal  
Journal of The Royal Society Interface     Full-text available via subscription   (Followers: 9)
Journal of Urban Technology     Hybrid Journal   (Followers: 5)
Journal of Urban Technology and Sustainability     Open Access  
Jurnal Energi Dan Manufaktur     Open Access  
Lasers in Manufacturing and Materials Processing     Full-text available via subscription   (Followers: 2)
Leibniz Transactions on Embedded Systems     Open Access  
Lightweight Design     Hybrid Journal   (Followers: 4)
Management and Production Engineering Review     Open Access   (Followers: 1)
Manufacturing Letters     Full-text available via subscription   (Followers: 2)
Manufacturing Review     Open Access   (Followers: 1)
Manufacturing Science and Technology     Open Access   (Followers: 3)
Materials Circular Economy     Hybrid Journal  
Materials Science and Engineering: B     Hybrid Journal   (Followers: 22)
Materials testing. Materialprüfung     Full-text available via subscription   (Followers: 4)
MECCA Journal of Middle European Construction and Design of Cars     Open Access  
Mechanics of Soft Materials     Hybrid Journal  
Métodos y Materiales     Open Access   (Followers: 1)
Micro and Nanostructures     Full-text available via subscription   (Followers: 3)
Microgravity Science and Technology     Hybrid Journal   (Followers: 3)
Modern Electronic Materials     Open Access   (Followers: 1)
Multimodal Transportation     Full-text available via subscription   (Followers: 2)
Nano Select     Open Access  
NanoEthics     Hybrid Journal  
Nanomanufacturing and Metrology     Hybrid Journal   (Followers: 2)
Nature Biotechnology     Full-text available via subscription   (Followers: 540)
NDT & E International     Hybrid Journal   (Followers: 220)
New Techno-Humanities     Open Access   (Followers: 1)
Nonconventional Technologies Review     Open Access  
Perspectives on Global Development and Technology     Hybrid Journal  
Plastics, Rubber and Composites     Hybrid Journal   (Followers: 9)
Procedia CIRP     Open Access   (Followers: 2)
Production & Manufacturing Research     Open Access   (Followers: 2)
Progress in Additive Manufacturing     Hybrid Journal   (Followers: 8)
Progress in Rubber, Plastics and Recycling Technology     Hybrid Journal   (Followers: 1)
Reliability Engineering & System Safety     Hybrid Journal   (Followers: 19)
Remote Sensing Letters     Hybrid Journal   (Followers: 46)
Research Papers Faculty of Materials Science and Technology Slovak University of Technology     Open Access   (Followers: 3)
Revista de Ciências Exatas e Tecnologia     Open Access  
Revista Produção Online     Open Access  
Science and Technology of Advanced Materials     Open Access   (Followers: 7)
Science China Materials     Hybrid Journal   (Followers: 1)
Scientia Canadensis: Canadian Journal of the History of Science, Technology and Medicine / Scientia Canadensis : revue canadienne d'histoire des sciences, des techniques et de la médecine     Open Access   (Followers: 4)
Strategic Design Research Journal     Open Access   (Followers: 1)
Structural Health Monitoring     Hybrid Journal   (Followers: 6)
Superhero Science and Technology     Open Access   (Followers: 2)
Sustainability and Climate Change     Full-text available via subscription   (Followers: 3)

        1 2     

Similar Journals
Journal Cover
Modern Electronic Materials
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2452-2449 - ISSN (Online) 2452-1779
Published by Pensoft Homepage  [58 journals]
  • Oxygen nonstoichiometry and magnetic properties of doped manganites
           La0.7Sr0.3Mn0.95Fe0.05O3-δ

    • Abstract: Modern Electronic Materials 7(4): 141-149
      DOI : 10.3897/j.moem.7.4.80758
      Authors : Nikolay A. Kalanda, Marta V. Yarmolich, Alexander L. Gurskii, Alexander V. Petrov, Aliaksandr L. Zhaludkevich, Oleg V. Ignatenko, Maria Serdechnova : In this work, solid solutions of La0.7Sr0.3Mn0.95Fe0.05O3-δ with different oxygen content were obtained by the solid-phase reactions technique. Based on the investigation of the dynamics of changes in the oxygen index (3 – δ) during heating of the samples, the formation of a stressed state in their grains as a result of annealing was established. This results in a decrease in the mobility of oxygen vacancies during the reduction of cations according to the Mn4+ + e– → Mn3+ scheme and explains the decrease of released oxygen amount with an increase of δ as well as the heating rate of the samples. When studying the magnetic properties of the obtained samples, it was found that the temperature dependence of the magnetization obeys the Curie–Weiss law and as the oxygen defficiency increases, the Curie temperature for solid solutions decreases. It was found that the particles are in a frozen ferromagnetic state when measured in the low-temperature region of the М (Т) dependence in “zero-field mode” at Т ˂ ТВ. The presence of ferromagnetism at Т ˃ ТВ leads to a magnetically ordered state, in which the resulting magnetic moment of the magnetic particle is influenced by thermal fluctuations. When considering the temperature values of the magnetization of lanthanum-strontium manganite samples, it was found that with an increase of temperature in the low-temperature region, magnetic ordering is disturbed due to the excitation of magnons with a quadratic dependence of the energy from the wave vector, the number of which increases in proportion to T3/2. This results in a decrease in the manganite magnetization. The observed temperature dependence of the magnetization measured in the “field-cooling mode” was approximated taking into account the quadratic and non-quadratic dispersion laws of the magnon spectrum. HTML XML PDF
      PubDate: Thu, 30 Dec 2021 18:01:48 +020
       
  • Electrical and galvanomagnetic properties of black phosphorus single
           crystals

    • Abstract: Modern Electronic Materials 7(4): 127-139
      DOI : 10.3897/j.moem.7.4.78587
      Authors : Andrei A. Kharchenko, Julia A. Fedotova, Valeryia Yu. Slabukho, Alexander K. Fedotov, Alexey V. Pashkevich, Ivan A Svito, Maxim V. Bushinsky : Black phosphorus (b-P) single crystals having the n-type electrical conductivity produced in a high pressure set-up (~1 GPa) with six diamond anvils at 800 °C for 12 h have been studied. The electrical conductivity σ(Т,В) and the Hall constant Rh(Т,В) have been analyzed within one-band and two-band models as functions of temperature in the 2 < Т < 300 K range and magnetic field in the 0 < В < 8 T range. Fitting of the experimental σ(Т,В) and Rh(Т,В) curves suggests the following key properties of the crystals: (1) intrinsic conductivity type, (2) approximately equal electron and hole concentrations and mobilities, (3) anisotropic behavior of electron and hole conductivities, concentrations and mobilities and (4) combination of negative and positive contributions to magnetoresistance (magnetoresistive effect, MR). In a zero magnetic field the anisotropy coefficient α = [σа (Т) – σс (Т)]/σс (Т) below 50–70 K is positive whereas above 220 K its sign changes to negative due to a specific combination of the temperature dependences of carrier concentration and mobility. It has been shown that the negative sign of relative MR (negative magnetoresistive effect) dominates at T < 25 K and B < 6 T and is presumably caused by the effects of strong localization resulting from structural disorder. The positive MR sign (positive magnetoresistive effect) is associated with the Lorentz mechanism of carrier movement and exhibits itself above 25 K in 6–8 T magnetic fields. HTML XML PDF
      PubDate: Thu, 30 Dec 2021 16:51:22 +020
       
  • The modern phase of the polysilicon market

    • Abstract: Modern Electronic Materials 7(4): 115-126
      DOI : 10.3897/j.moem.7.4.81721
      Authors : Arkady V. Naumov, Dmitry L. Orehov : The current condition and outlooks of the world semiconductor and polycrystalline silicon (poly-Si) markets have been analyzed. A long period of low PS prices which hindered the growth of investments into the industry has now changed for price recovery to an investment attractive level. Demand and offer balance for the period until 2024 and for the long term has been analyzed, and the main currently used PS processes have been reviewed. The current poly-Si market proficiency is expected to remain in the near and medium terms. However the “green turn” of the energy industry announced by all the governments, the development of local markets and the price recovery to an investment attractive level have promoted the development of new PS fab projects. Of special importance for Russia is the choice of Siemens trichlorosilane process parameters. A specific feature of the Russian market is the presence of several very important fields (solar energy, microelectronics, high-power electronics, photonics and fiber optics) which are small by international standards and equally face raw material shortage. It appears that Russia will greatly benefit from integral projects delivering solutions of multiple raw materials supply problems. HTML XML PDF
      PubDate: Thu, 30 Dec 2021 12:57:17 +020
       
  • Effect of contact phenomena on the electrical conductivity of
           reduced lithium niobate

    • Abstract: Modern Electronic Materials 7(4): 167-175
      DOI : 10.3897/j.moem.7.4.78569
      Authors : Andrey S. Shportenko, Alexander M. Kislyuk, Andrei V. Turutin, Ilya V. Kubasov, Mikhail D. Malinkovich, Yuri N. Parkhomenko : Lithium niobate is a ferroelectric material finding a wide range of applications in optical and acoustic engineering. Annealing of lithium niobate crystals in an oxygen-free environment leads to appearance of black coloration and concomitant increasing electrical conductivity due to chemical reduction. There are plenty of literary data on the electrophysical properties of reduced lithium niobate crystals though contact phenomena occurring during electrical conductivity measurement as well as issues of interaction between the electrode material and the test specimens are almost disregarded. The effect of chromium and indium tin oxide electrodes on the results of measurements of electrophysical parameters at room temperature for lithium niobate specimens reduced at 1100 °C has been investigated. It was found that significant nonlinearities in the VACs of the specimens at below 5 V distort the specific resistivity readings for lithium niobate. This requires measurements at higher voltages. Impedance spectroscopy studies have shown that the measurement results are largely affected by capacities including those probably induced near the contacts. It has been shown that the experimental results are described adequately well by a model implying the presence of near-contact capacities that are parallel to the specimen’s own capacity. Possible mechanism of the induction of these capacities has been described and a hypothesis has been proposed of the high density of electron states at the electrode/specimen interface that can trap carriers, the concentration of trapped carriers growing with an increase in annealing duration. HTML XML PDF
      PubDate: Thu, 30 Dec 2021 12:33:49 +020
       
  • Hydrodynamics and heat exchange of crystal pulling from melts. Part II:
           Numerical study of free convection mode

    • Abstract: Modern Electronic Materials 7(4): 151-165
      DOI : 10.3897/j.moem.7.4.51073
      Authors : Vladimir S. Berdnikov : This work is a brief overview of numerical study results for hydrodynamics and convective heat exchange for the classic Czochralski technique obtained at the Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences. Flow structure evolution has been compared for melts with Prandtl numbers Pr = 0.05, 16, 50 and 2700. The regularities of local and integral convective heat exchange in the crucible/melt/crystal system for thermal gravity, thermocapillary and heat-induced gravity capillary convection have been studied. The calculations have been carried out using the finite and compact difference methods. This work is a continuation of an article: Berdnikov VS (2019) Hydrodynamics and heat exchange of crystal pulling from melts. Part I: Experimental studies of free convection mode. Modern Electronic Materials 5(3): 91–100. https://doi.org/10.3897/j.moem.5.3.46647 HTML XML PDF
      PubDate: Thu, 30 Dec 2021 10:08:36 +020
       
  • Magnetization of magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles

    • Abstract: Modern Electronic Materials 7(3): 85-90
      DOI : 10.3897/j.moem.7.3.75786
      Authors : Gunnar Suchaneck : Magnetization is a key property of magnetic materials. Nevertheless, a satisfactory, analytical description of the temperature dependence of magnetization in double perovskites such as strontium ferromolybdate is still missing. In this work, we develop, for the very first time, a model of the magnetization of nanosized, magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles. The temperature dependence of magnetization was approximated by an equation consisting of a Bloch-law spin wave term, a higher order spin wave correction, both taking into account the temperature dependence of the spin-wave stiffness, and a superparamagnetic term including the Langevin function. In the limit of pure ferromagnetic behavior, the model is applicable also to SFMO ceramics. In the vicinity of the Curie temperature (T/TC> 0.85), the model fails. HTML XML PDF
      PubDate: Thu, 30 Sep 2021 21:58:39 +030
       
  • Two-dimensional WSe2 flakes under high power optical excitation

    • Abstract: Modern Electronic Materials 7(3): 109-113
      DOI : 10.3897/j.moem.7.3.74274
      Authors : Kirill Brekhov, Sergey Lavrov, Andrey Kudryavtsev, Nikita Ilyin : Quasi-2D layers of transition metal dichalcogenides are promising candidates for creating saturable absorbers for pulsed lasers. However, the peculiarities of intense electromagnetic radiation’s influence on such structures have not been thoroughly studied. This paper explores the dynamics of photoexcited carriers in WSe2 flakes through experimental studies. These studies found that WSe2 flakes significantly change their optical properties under the influence of a high-power optical pump, allowed estimating the thermalization time of these structures (about 2 ps), and found that full relaxation takes more than 10 ps. The concentration of carriers in the semiconductor surface layer was estimated to be about 1028 m–3. It was found that standard description models of the optical response based on exciton resonances and absorption by free carriers could not adequately describe the experiments’ results. Thus, for an accurate description of the optical response, it was necessary to consider the effects associated with Coulomb screening that are caused by the high concentration of photo-excited carriers of the optical pumping densities used in this experiment. HTML XML PDF
      PubDate: Thu, 30 Sep 2021 17:45:05 +030
       
  • Synthesis, structure and electromagnetic properties of FeCoAl/C
           nanocomposites

    • Abstract: Modern Electronic Materials 7(3): 99-108
      DOI : 10.3897/j.moem.7.3.77105
      Authors : Dmitriy G. Muratov, Lev V. Kozhitov, Egor V. Yakushko, Andrey A. Vasilev, Alena V. Popkova, Vitaly A. Tarala, Evgeniy Yu. Korovin : Magnetic nanoparticles play an important role in rapidly developing advanced branches of science and industry, e.g. fabrication of magnetic storage media, synthesis of ferromagnetic liquids, medicine and chemistry. One problem faced in the usage of magnetic nanoparticles is their high chemical activity leading to oxidation in air and agglomeration. The chemical activity of magnetic nanoparticles stems from the contribution of their large specific surface to volume ratio. Carbon coating of nanoparticles reduces the interaction between nanoparticles. FeCoAl/C metal-carbon nanocomposites have been synthesized using IR pyrolysis of polymer/metal salt precursors. The effect of synthesis temperature (IR heating) in the range from 500 to 700 °C on the structure and composition of the nanomaterials has been studied. We show that the forming particles are the FeCoAl ternary solid solution with a FeCo based bcc lattice. An increase in the synthesis temperature from 500 to 700 °C leads to an increase in the coherent scattering region of three-component nanoparticles from 5 to 19 nm. An increase in the aluminum content from 20 to 30% relative to Fe and Co results in an increase in the size of the nanoparticles to 15 nm but this also entails the formation of a Co based solid solution having an fcc lattice. An increase in the nanocomposite synthesis temperature and a growth of the relative Al content as a result of a more complete carbonization and the structure-building effect of metals reduce the degree of amorphousness of the nanocomposite carbon matrix and lead to the formation of graphite-like phase crystallites having an ordered structure. The effect of synthesis temperature and relative content of metals on the electromagnetic properties (complex permittivity and permeability) of the synthesized nanocomposites has been studied. Synthesis conditions affect the radio absorption properties of the nanocomposites, e.g. reflection loss (RL) in the 3–13 GHz range. HTML XML PDF
      PubDate: Thu, 30 Sep 2021 14:05:52 +030
       
  • Effect of synthesis conditions and composition on structural and phase
           states and electrical properties of nanogranular (FeCoZr)x (PZT)100-x
           films (30 ≤ x ≤ 85 at.%)

    • Abstract: Modern Electronic Materials 7(3): 91-97
      DOI : 10.3897/j.moem.7.3.76277
      Authors : Julia A. Fedotova : Granular films containing Fe50Co50Zr10 alloy nanoparticles inside Pb0,81Sr0,04(Na0,5Bi0,5)0,15(Zr0,575Ti0,425)O3 (PZT) ferroelectric matrix possess a combination of functional magnetic and electrical properties which can be efficiently controlled by means of external electric or magnetic fields. The formation of the required granular structure in PZT matrix is only possible if synthesis is carried out in an oxygen-containing atmosphere leading to substantial oxidation of metallic nanoparticles. Thus an important task is to study the oxidation degree of metallic nanoparticles depending on synthesis conditions and the effect of forming phases on the electrical properties of the films. The relationship between the structural and phase state and electrical properties of granular FeCoZr)x (PZT)100-x films (30 ≤ x ≤ 85 at.%) synthesized in an oxygen-containing atmosphere at the oxygen pressure PO in a range of (2.4–5.0) · 10–3 Pa has been studied using X-ray diffraction, EXAFS and four-probe electrical resistivity measurement. Integrated comparative analysis of the structural and phase composition and local atomic order in (FeCoZr)x (PZT)100-x films has for the first time shown the fundamental role of oxygen pressure PO during synthesis on nanoparticle oxidation and phase composition. We show that the oxygen pressure being within PO = 3.2 · 10–3 Pa an increase in x leads to a transition from nanoparticles of Fe(Co,Zr)O complex oxides to a superposition of complex oxides and a-FeCo(Zr,O) ferromagnetic nanoparticles (or their agglomerations). At higher oxygen pressures РО = 5.0 · 10–3 Pa the nanoparticles undergo complete oxidation with the formation of the (FexCo1-x)1-δO complex oxide having a Wurtzite structure. The forming structural and phase composition allows one to explain the observed temperature dependences of the electrical resistivity of granular films. These dependences are distinguished by a negative temperature coefficient of electrical resistivity over the whole range of film compositions at a high oxygen pressure (РО = 5.0 · 10–3 Pa) and a transition to a positive temperature coefficient of electrical resistivity at a lower oxygen pressure (РО = 3.2 · 10–3 Pa) in the synthesis atmosphere and x> 69 at.% in the films. The transition from a negative to a positive temperature coefficient of electrical resistivity which suggests the presence of a metallic contribution to the conductivity is in full agreement with the X-ray diffraction and EXAFS data indicating the persistence of unoxidized a-FeCo(Zr,O) ferromagnetic nanoparticles or their agglomerations. HTML XML PDF
      PubDate: Thu, 30 Sep 2021 13:53:12 +030
       
  • Comparison between results of optical and electrical measurements of free
           electron concentration in n-InAs specimens

    • Abstract: Modern Electronic Materials 7(3): 79-84
      DOI : 10.3897/j.moem.7.3.76700
      Authors : Tatyana G. Yugova, Aleksandr G. Belov, Vladimir E. Kanevskii, Evgeniya I. Kladova, Stanislav N. Knyazev, Irina B. Parfent'eva : A theoretical model has been developed for determining the free electron concentration in n-InAs specimens from characteristic points in far IR reflection spectra. We show that this determination requires plasmon-phonon coupling be taken into account, otherwise the measured electron concentration proves to be overestimated. A correlation between the electron concentration Nopt and the characteristic wavenumber ν+ has been calculated and proves to be well fit by a third order polynomial. The test specimens have been obtained by tin or sulfur doping of indium arsenide. The electron concentration in the specimens has been measured at room temperature using two methods: the optical method developed by the
      Authors (Nopt) and the conventional four-probe Hall method (the Van der Pau method, NHall). The reflecting surfaces of the specimens have been chemically polished or fine abrasive ground. The condition Nopt> NHall has been shown to hold for all the test specimens. The difference between the optical and the Hall electron concentrations is greater for specimens having polished reflecting surfaces. The experimental data have been compared with earlier data for n-GaAs. A qualitative model explaining the experimental data has been suggested. HTML XML PDF
      PubDate: Thu, 30 Sep 2021 10:53:30 +030
       
  • Methods of trichlorosilane synthesis for polycrystalline silicon
           production. Part 2: Hydrochlorination and redistribution

    • Abstract: Modern Electronic Materials 7(2): 33-43
      DOI : 10.3897/j.moem.7.2.65572
      Authors : Vladimir N. Jarkin, Oleg A. Kisarin, Tatyana V. Kritskaya : Novel technical solutions and ideas for increasing the yield of solar and semiconductor grade polycrystalline silicon processes have been analyzed. The predominant polycrystalline silicon technology is currently still the Siemens process including the conversion of technical grade silicon (synthesized by carbon-thermal reduction of quartzites) to trichlorosilane followed by rectification and hydrogen reduction. The cost of product silicon can be cut down by reducing the trichlorosilane synthesis costs through process and equipment improvement. Advantages, drawbacks and production cost reduction methods have been considered with respect to four common trichlorosilane synthesis processes: hydrogen chloride exposure of technical grade silicon (direct chlorination, DC), homogeneous hydration of tetrachlorosilane (conversion), tetrachlorosilane and hydrogen exposure of silicon (hydro chlorination silicon, HC), and catalyzed tetrachlorosilane and dichlorosilane reaction (redistribution of anti-disproportioning reaction). These processes remain in use and are permanently improved. Catalytic processes play an important role on silicon surface, and understanding their mechanisms can help find novel applications and obtain new results. It has been noted that indispensable components of various equipment and process designs are recycling steps and combined processes including active distillation. They provide for the most complete utilization of raw trichlorosilane, increase the process yield and cut down silicon cost. HTML XML PDF
      PubDate: Wed, 30 Jun 2021 18:22:42 +030
       
  • Growth of 100 mm indium antimonide single crystals by modified Czochralski
           technique

    • Abstract: Modern Electronic Materials 7(2): 73-78
      DOI : 10.3897/j.moem.7.2.76286
      Authors : Roman Yu. Kozlov, Svetlana S. Kormilitsina, Elena V. Molodtsova, Eugene O. Zhuravlev : Currently there is a worldwide trend to increase the diameter of crystals grown from elemental semiconductors and semiconductor compounds. According to literary data the diameter of 3–5 semiconductor single crystals grown nowadays is 4 to 6 inches. So far up to 75 mm indium antimonide single crystals have been grown in Russia. Indium antimonide is the element base for the widest field of solid state electronics, i.e., optoelectronics. Indium antimonide is used for the fabrication of 3–5 mm range linear photodetectors and photodetector arrays used as light-sensitive material in heat vision systems. Growth heat conditions have been selected and 100 mm [100] indium antimonide single crystals have been grown using the modified two-stage Czochralski technique. The graphite heating unit has been oversized to accommodate a 150 mm crucible and a 4.5–5 kg load. The results of the work have provided for a substantial increase in the yield of photodetectors. The electrophysical properties of the as-grown single crystals have been studied using the Van der Pau method and proved to be in agreement with the standard parameters of undoped indium antimonide. Using the 9-field etch method of pit counting under an optical microscope the dislocation density in the 100 mm single crystals has been measured to be ≤ 100 cm-2which is similar to that for 50 mm single crystals. HTML XML PDF
      PubDate: Wed, 30 Jun 2021 17:00:24 +030
       
  • Simulation of TiN/HfO2/Pt memristor I–V curve for different
           conductive filament thickness

    • Abstract: Modern Electronic Materials 7(2): 45-51
      DOI : 10.3897/j.moem.7.2.73289
      Authors : Andrey N. Aleshin, Nikolay V. Zenchenko, Oleg A. Ruban : The operation of the TiN/HfO2/Pt bipolar memristor has been simulated by the finite elements method using the Maxwell steady state equations as a mathematical basis. The simulation provided knowledge of the effect of conductive filament thickness on the shape of the I–V curve. The conductive filament has been considered as the highly conductive Hf ion enriched HfOx phase (x < 2) whose structure is similar to a Magneli phase. In this work a mechanism has been developed describing the formation, growth and dissolution of the HfOx phase in bipolar mode of memristor operation which provides for oxygen vacancy flux control. The conductive filament has a cylindrical shape with the radius varying within 5–10 nm. An increase in the thickness of the conductive filament leads to an increase in the area of the hysteresis loop of the I–V curve due to an increase in the energy output during memristor operation. A model has been developed which allows quantitative calculations and hence can be used for the design of bipolar memristors and assessment of memristor heat loss during operation. HTML XML PDF
      PubDate: Wed, 30 Jun 2021 15:29:41 +030
       
  • Study of colloidal gold nanorods in liquid dispersions using light
           scattering methods

    • Abstract: Modern Electronic Materials 7(2): 53-61
      DOI : 10.3897/j.moem.7.2.75519
      Authors : Pavel V. Shalaev, Polina A. Monakhova, Sergey A. Tereshchenko : Five samples of liquid dispersions of colloidal gold nanorods having various aspect ratios have been studied using light scattering methods. Transmission electron microscopy has been employed as a reference method. Advantages and drawbacks of dynamic light scattering and nanoparticle tracking analysis methods for study of nanoparticle geometrical parameters and concentration, sample monodispersity degree and detection of large particle aggregations and quasispherical impurities have been demonstrated. We show that depolarized dynamic light scattering method can be used for analysis of geometrical parameters of colloidal gold nanorods in liquid dispersions. The measurement results depend largely on the presence of large impurity particles or particle aggregations in samples. In turn the presence of large particles in dispersions can be detected using dynamic light scattering methods or nanoparticle tracking analysis. Dynamic light scattering method is more sensitive to the presence of even small quantities of large impurities or aggregations in samples. The monodispersity degree of nanorod liquid dispersions can also be assessed using dynamic light scattering and nanoparticle tracking analysis methods, and the measurement results can be considered more statistically significant in comparison with electron microscopy because a larger number of particles are analyzed. An increase in the concentration of spherical particles in compound dispersions of colloidal gold nanospheres and nanorods leads to a decrease in the contribution of the rotational mode to the overall scattering intensity. Data on the concentration of quasispherical impurities in samples of colloidal gold nanorod liquid dispersions have been reported on the basis of scattered light depolarization degree measurements. HTML XML PDF
      PubDate: Wed, 30 Jun 2021 12:54:34 +030
       
  • Effect of PECVD SiNx deposition process parameters on electrical
           properties of SiNx/AlGaN/GaN structures

    • Abstract: Modern Electronic Materials 7(2): 63-71
      DOI : 10.3897/j.moem.7.2.73293
      Authors : Kira L. Enisherlova, Lev A. Seidman, Ella M. Temper, Yuliy A. Kontsevoy : The effect of parameters of plasma enhanced chemical vapor deposition (PECVD) processes for SiNx film fabrication on the electrical parameters of dielectric/АlGaN/GaN structures has been studied. The effect of growing film composition, additional heterostructure surface treatment with nitrogen plasma before dielectric deposition and HF biasing during treatment on the parameters of the С–V and I–V curves of SiNx/АlGaN/GaN structures has been analyzed. We show that films with nitrogen to silicon concentration ratios of 60 and 40% and a high oxygen content exhibit a decrease in the positive fixed charge in the structures although the I–V curves of the structures exhibit current oscillations. Information has been reported on the effect of PECVD process mode on current oscillation parameters, e.g. period and amplitude, and length of I–V curve section in which oscillations occur. Possible explanation of these oscillations has been suggested. Additional nitrogen plasma treatment of heterostructure surface before monosilane supply to the chamber changes the magnitude and sign of fixed charge and reduces the free carrier concentration in the 2D gas channel of SiNx/АlGaN/GaN heterostructures. Experimental evidence has been provided for the effect of PECVD process parameters and surface preparation on the electrical parameters of the heterostructures grown. HTML XML PDF
      PubDate: Wed, 30 Jun 2021 10:31:33 +030
       
  • Methods of trichlorosilane synthesis for polycrystalline silicon
           production. Part 1: Direct synthesis

    • Abstract: Modern Electronic Materials 7(1): 1-10
      DOI : 10.3897/j.moem.7.1.64953
      Authors : Vladimir N. Jarkin, Oleg A. Kisarin, Tatyana V. Kritskaya : Novel technical solutions and ideas for increasing the yield of solar and semiconductor grade polycrystalline silicon processes have been analyzed. The predominant polycrystalline silicon technology is currently still the Siemens process including the conversion of technical grade silicon (synthesized by carbon-thermal reduction of quartzites) to trichlorosilane followed by rectification and hydrogen reduction. The cost of product silicon can be cut down by reducing the trichlorosilane synthesis costs through process and equipment improvement. Advantages, drawbacks and production cost reduction methods have been considered with respect to four common trichlorosilane synthesis processes: hydrogen chloride exposure of technical grade silicon (direct chlorination, DC), homogeneous hydration of tetrachlorosilane (conversion), tetrachlorosilane and hydrogen exposure of silicon (hydro chlorination silicon, HC), and catalyzed tetrachlorosilane and dichlorosilane reaction (redistribution of anti-disproportioning reaction). These processes remain in use and are permanently improved. Catalytic processes play an important role on silicon surface, and understanding their mechanisms can help find novel applications and obtain new results. It has been noted that indispensable components of various equipment and process designs are recycling steps and combined processes including active distillation. They provide for the most complete utilization of raw trichlorosilane, increase the process yield and cut down silicon cost. HTML XML PDF
      PubDate: Tue, 30 Mar 2021 13:52:56 +030
       
  • Scanning probe microscopic study of P(VDF-TrFE) based ferroelectric
           nanocomposites

    • Abstract: Modern Electronic Materials 7(1): 11-16
      DOI : 10.3897/j.moem.7.1.73283
      Authors : Yulia S. Terekhova, Dmitry A. Kiselev, Alexander V. Solnyshkin : Ceramic and polymer based nanocomponents combine the properties of their constituents, e.g. flexibility, elasticity, polymer reprocessability, hardness typical of glass, wear resistance and high light refraction index. This helps improving many properties of the materials in comparison with the source components. Since recently researchers have been manifesting interest to the properties of complex composite compounds. This is primarily caused by the unique properties of their structures as compared with conventional materials having homogeneous composition. Secondly, this interest is caused by the fact that these compounds may prove to be much cheaper than homogeneous structures provided the physical properties of the composite in a preset range of parameters (temperature, applied field frequency etc.) are identical to those of the respective homogeneous materials. For example, polyvinyl idenfluoride (PVDF) type ferroelectric polymers and copolymers on its basis have found wide application for functional elements of various electromechanic devices in advanced electronics due to their relatively good piezoelectric and pyroelectric properties. The strong random polarization and the formation of polar non-centrosymmetric crystals provide for the high piezoelectric and pyroelectric activity in these crystals. Scanning probe microscopy has been used for study of ferroelectric nanocomposites having different compositions. The matrix specimen for study of local polarization switching at a nanoscale level was vinyl idenfluoride and trifluoroethylene P(VDF-TrFE) copolymer possessing sufficiently high crystallinity. The composite fillers were barium titanate BaTiO3 and deuterized triglycinsulfate DTGS ferroelectric powders and zirconate-titanate lead barium BPZT ceramic powder. We show these materials to show good promise for use in memory cells. HTML XML PDF
      PubDate: Tue, 30 Mar 2021 12:19:02 +030
       
  • Corrosion of indium doped E-AlMgSi aluminum conductor alloy (Aldrey)

    • Abstract: Modern Electronic Materials 7(1): 21-30
      DOI : 10.3897/j.moem.7.1.65581
      Authors : Izatullo N. Ganiev, Firdavs A. Aliev, Haydar O. Odinazoda, Ahror M. Safarov, Rakhmazhon Usmonov : The effect of impurities on the electrical conductivity of aluminum has been studied in detail. The electrical conductivity of aluminum is 65.45% of that of copper. The tensile strength of aluminum wire is 150–170 MPa which, at equal conductivity, is about 65% of the strength of copper wire. This strength of aluminum wire is sufficient for bearing the wire’s own weight but may be too low in case of snow, ice or wind overloads. One way to improve the strength of aluminum wire is to use aluminum alloys having higher strength combined with sufficiently high electrical conductivity, e.g. the E-AlMgSi alloy (Aldrey). The key strengthening agent of the E-AlMgSi alloy (Aldrey) is the Mg2Si phase which imparts high mechanical strength to aluminum. In this work we present experimental data on the kinetics of high-temperature oxidation and electrochemical corrosion of indium doped E-AlMgSi aluminum conductor alloy (Aldrey). Thermal gravimetric study has shown that indium doping and high temperature exposure increase the oxidation rate of E-AlMgSi alloy (Aldrey), with the apparent alloy oxidation activation energy decreasing from 120.5 to 91.8 kJ/mole. Alloy oxidation rate data determined using a potentiostatic technique in NaCl electrolyte media have shown that the corrosion resistance of the indium doped alloy is 20–30% superior to that of the initial alloy. With an increase in NaCl electrolyte concentration the electrochemical potentials of the alloys decrease whereas the corrosion rate increases regardless of alloy composition. HTML XML PDF
      PubDate: Tue, 30 Mar 2021 11:56:18 +030
       
  • Review on the paper Reversed Crystal Growth

    • Abstract: Modern Electronic Materials 7(1): 31-32
      DOI : 10.3897/j.moem.7.1.73285
      Authors : Pavel P. Fedorov : Review on the paper Wuzong Zhou, Reversed Crystal Growth. Crystals. 2019; 9(1): 7 (16 pp). https://doi.org/10.3390/cryst9010007 HTML XML PDF
      PubDate: Tue, 30 Mar 2021 11:40:29 +030
       
  • High-temperature poling treatment of congruent ferroelectric
           LiNb0.5Ta0.5O3 solid solution single crystals

    • Abstract: Modern Electronic Materials 7(1): 17-20
      DOI : 10.3897/j.moem.7.1.66773
      Authors : Anatolii A. Mololkin, Dmitry V. Roshchupkin, Eugenii V. Emelin, Rashid R. Fahrtdinov : Lithium niobate and tantalate are among the most important and widely used materials of acoustooptics and acoustoelectronics. They have high piezoelectric constants enabling their use as actuators. Their use is however restricted by the thermal instability of lithium niobate crystals and the low Curie temperature TC of lithium tantalate crystals. Overcoming these drawbacks typical of some compounds is possible by growing LiNb1-xTaxO3 single crystals. Good quality LiNb1-xTaxO3 single crystals have been grown using the Czochralsky technique. High-temperature poling process of LiNb1-xTaxO3 single crystals has been studied. The main differences between the process modes required for poling of congruent LiNb1-xTaxO3 single crystals and congruent LiNbO3 single crystals have been demonstrated. Parameters of high-temperature electric diffusion processing of LiNb1-xTaxO3 single crystals that provide for singledomain crystals for further study of physical properties have been reported. HTML XML PDF
      PubDate: Tue, 30 Mar 2021 11:24:29 +030
       
 
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