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  Subjects -> ELECTRONICS (Total: 179 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 7)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 5)
Advances in Electronics     Open Access   (Followers: 78)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Power Electronics     Open Access   (Followers: 33)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 313)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 13)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 28)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 36)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 8)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 266)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 105)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 86)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 92)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 51)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 189)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 97)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 77)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 46)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 66)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 70)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 56)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 19)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 40)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 71)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 46)
IET Smart Grid     Open Access  
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 58)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 24)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 5)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 6)
International Journal of Control     Hybrid Journal   (Followers: 12)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 2)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 14)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 12)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 24)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 10)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 24)
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 8)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Field Robotics     Hybrid Journal   (Followers: 2)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 167)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 9)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 28)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 18)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 33)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal  
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 15)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 53)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 75)
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 2)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 11)
Електротехніка і Електромеханіка     Open Access  

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Similar Journals
Journal Cover
Superconductor Science and Technology
Journal Prestige (SJR): 1.036
Citation Impact (citeScore): 3
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0953-2048 - ISSN (Online) 1361-6668
Published by IOP Homepage  [72 journals]
  • A waveguide-integrated superconducting nanowire single-photon detector
           with a spot-size converter on a Si photonics platform
    • Authors: Hiroyuki Shibata; Tatsurou Hiraki, Tai Tsuchizawa, Koji Yamada, Yasuhiro Tokura Sinji Matsuo
      First page: 034001
      Abstract: We report a high system detection-efficiency superconducting nanowire single-photon detector (SNSPD) with a spot-size converter (SSC) on a Si photonics platform. The NbN-SNSPD is evanescently coupled to the Si waveguide and connected to the optical fibre through the low-loss SSC comprising a Si inverse taper and large silica-based core. The fabricated SNSPD chip was assembled on a low-loss fibre-coupled module. The fibre coupling loss of the module is remarkably small (1.9 dB/facet). The fabricated SNSPD module shows system detection efficiency of 32% with the dark count rate of 95 Hz and timing jitter of 75 ps. The measured system detection efficiency is over ten times larger than that of previous waveguide-integrated SNSPDs on the Si platform. The noise equivalent power reaches 3.6 × 10 −18 W Hz −1/2 , and the figure of merit reaches 1.9 × 10 8 .
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-21T00:00:00Z
      DOI: 10.1088/1361-6668/aaf84f
      Issue No: Vol. 32, No. 3 (2019)
       
  • Superconductivity enhancement in Ta 1+ x Se 2 with a randomly stacked
           structure
    • Authors: X C Li; M H Zhou C Dong
      First page: 035001
      Abstract: A series of Ta 1+ x Se 2(0.00 ≤ x ≤ 0.12) samples was prepared and characterized by x-ray powder diffraction, resistance, magnetization and specific heat measurements. Based on the fitting of the diffraction patterns, we found that Ta 1+ x Se 2 has two randomly stacked structures with distinct stacking units: 2H b and 3R slabs when x ≤ 0.06 and single TaSe 2 layers with Ta atoms in trigonal prismatic coordination with Se when x > 0.06. The superconducting critical temperatures ( T c ) of the T a 1+ x Se 2 samples can be significantly enhanced from 0.14 K for pure TaSe 2 to above 2 K in the Ta-rich samples with both structures. The maximum T c of 3.2 K was obtained in Ta 1.06 Se 2 . The remarkable enhancement of T c in Ta 1+ x Se 2 originates from t...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-21T00:00:00Z
      DOI: 10.1088/1361-6668/aaf355
      Issue No: Vol. 32, No. 3 (2019)
       
  • Development of sputtered Nb 3 Sn films on copper substrates for
           superconducting radiofrequency applications
    • Authors: E A Ilyina; G Rosaz, J B Descarrega, W Vollenberg, A J G Lunt, F Leaux, S Calatroni, W Venturini-Delsolaro M Taborelli
      First page: 035002
      Abstract: Superconducting radiofrequency (SRF) cavities that could provide a higher quality factor as well as a higher operational accelerating gradient at an affordable cost are in high demand for the future generation of particle accelerators. This study aims to demonstrate the potential of Nb 3 Sn as material of choice for such SRF applications. Due to its brittle nature, the only way to produce an Nb 3 Sn SFR cavity is to synthesise a thin layer inside a cavity made of niobium or copper. In this work, direct current magnetron sputtering using a stoichiometric target of Nb 3 Sn was employed to produce films on copper samples. Assessment of the morphology, microstructure and superconducting properties were performed in order to ensure that this approach is suitable for SRF applications. The potential of the method is proven by obtaining films, which exhibit a crack-free surface, dense morphology and critical temperatures ( T c ) up to 16 K. The...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-21T00:00:00Z
      DOI: 10.1088/1361-6668/aaf61f
      Issue No: Vol. 32, No. 3 (2019)
       
  • The effects of Mg doping on the microstructure and transport properties of
           internal tin-processed brass matrix Nb 3 Sn superconductors
    • Authors: Zhou Yu; Nobuya Banno, Yong Zhao Kyoji Tachikawa
      First page: 035003
      Abstract: The addition of Zn into Cu matrix has been proved to enhance the Sn activity and accelerate the formation of a Nb 3 Sn layer in internal tin-processed Nb 3 Sn wires. However, in our samples, Ti is doped in Sn cores, and during the reaction, Ti was observed to accumulate between the inner and outer sub-elements of the 1980-Nb-core multi-filamentary brass matrix wires. With the addition of Mg into the brass matrix, Ti accumulation between the sub-elements was significantly suppressed, which promoted Ti incorporation into the Nb 3 Sn layers. Meanwhile, the formed Nb 3 Sn layers exhibited smaller grain sizes. Compared to the brass (Cu-12wt%Zn) matrix wires, an improvement of critical current density ( J c ) was found in the Cu-12Zn-0.2Mg matrix wires due to the incorporation of Ti into the Nb 3 Sn layer and the refinement of the Nb 3 Sn grain size. The irreversibility field ( B irr
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-21T00:00:00Z
      DOI: 10.1088/1361-6668/aaf61a
      Issue No: Vol. 32, No. 3 (2019)
       
  • Recent breakthrough development in iron-based superconducting wires for
           practical applications
    • Authors: Chao Yao; Yanwei Ma
      First page: 023002
      Abstract: Iron-based superconductors (IBSs), discovered in 2008, formed the second high- T c superconductor family after cuprate superconductors, and over the past decade have been the subject of extensive research into their physical nature and application potential. With their attractions of very high upper critical fields and small electromagnetic anisotropy, tremendous advances have been made in wire research and development (R&D) to explore the potential of IBSs for high-field applications. In recent years, rapid progress was made on the critical current density ( J c ) of the 122-type IBS wires based on a powder-in-tube technique. Encouraging breakthroughs were made, including a high transport J c exceeding the practical level of 10 5 A cm −2 (at 4.2 K, 10 T) and the first 100 meter-class wire. This review covers the state-of-the-art techniques and their mechanism in realizing high transport J c
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-15T00:00:00Z
      DOI: 10.1088/1361-6668/aaf351
      Issue No: Vol. 32, No. 2 (2019)
       
  • Effect of neutron irradiation on Nb 3 Sn wire
    • Authors: Arata Nishimura; Tateshi Nakamoto, Makoto Yoshida, Masami Iio, Masanori Yamazaki, Takeshi Toyama, Yoshimitsu Hishinuma, Hidetoshi Oguro Satoru Awaji
      First page: 024004
      Abstract: A Nb 3 Sn wire which was manufactured for the ITER toroidal field coil conductor by a bronze route process was prepared for this study to investigate the effect of neutron irradiation on the critical current in a high magnetic field. The critical current of the virgin wire was measured in liquid helium with a 28 T hybrid superconducting magnet at the High Field Laboratory for Superconducting Materials in Tohoku University. It was also measured in vacuum with a heat conduction type variable temperature insert (VTI) at the International Research Center for Nuclear Materials Science at Tohoku University. The wire was irradiated at below 100 °C by fission neutrons at up to 4.9 × 10 22 neutrons m −2 (>0.1 MeV) at BR2 in Belgium, and the critical current after the irradiation was evaluated with a VTI in the range of 8–15.5 T. The difference of the critical current measured with two facilities was discussed, focussing on Joule heating of the sample holde...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-10T00:00:00Z
      DOI: 10.1088/1361-6668/aaf903
      Issue No: Vol. 32, No. 2 (2019)
       
  • International round robin test for tensile testing HTS wires at cryogenic
           temperatures
    • Authors: N Bagrets; V A Anvar, L Chiesa, M A Delgado, D M McRae, A Nijhuis, G Nishijima, K Osamura, H S Shin, R P Walsh, K-P Weiss, Y Zhang, Y Zhao Z Zhao
      First page: 024005
      Abstract: Within the framework for establishing standards of test methods for superconducting technical wires, various standards have been issued by the International Electrotechnical Commission (IEC) (standard documents IEC 61788-1 to -20). Following the successful round robin test (RRT) for tensile testing REBCO wires at room temperature (Osamura K et al 2014 Supercond. Sci. Technol . 27 085009), this effort is extended to tensile test HTS wires at cryogenic temperatures and is coordinated by the CryoMaK lab at Karlsruhe Institute of Technology. Five different commercially available REBCO wires from five different manufacturers and one BiSCCO wire from another supplier were provided by the Versailles Project on Advanced Materials and Standards ( http://vamas.org [http://www.vamas.org] ) for testing. Samples were distributed between eight participating labs from five different countries for testing according to the specified guidelines. After the test result...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-16T00:00:00Z
      DOI: 10.1088/1361-6668/aaf619
      Issue No: Vol. 32, No. 2 (2019)
       
  • CeIr 3 : superconductivity in a phase based on tetragonally close packed
           clusters
    • Authors: Karolina Górnicka; Elizabeth M Carnicom, Sylwia Gołąb, Marcin Łapiński, Bartłomiej Wiendlocha, Weiwei Xie, Dariusz Kaczorowski, Robert J Cava Tomasz Klimczuk
      First page: 025008
      Abstract: We present the crystallographic analysis, superconducting and spectroscopic characterization, and theoretical modeling of CeIr 3 . Lattice parameters a = 5.2945(1) Å and c = 26.219(1) Å are found for the R-3m symmetry crystal structure, which are close to the literature values. CeIr 3 is a moderate type-II superconductor ( κ GL = 17, λ e–p = 0.65) below 2.5 K. Ce ions exhibit a strongly intermediate valence character as evidenced by x-ray photoelectron spectroscopy. The normal state magnetic susceptibility is weakly temperature dependent and follows the inter-configuration fluctuation model with a singlet Ce−4 f 0 ground state. Theoretical calculations support a non-magnetic ground state of the system and reveal that Ir−5 d states are dominant at the Fermi level.
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-10T00:00:00Z
      DOI: 10.1088/1361-6668/aaf48f
      Issue No: Vol. 32, No. 2 (2019)
       
  • Mapping the flux penetration profile in a 2G-HTS tape at the microscopic
           scale: deviations from a classical critical state model
    • Authors: Estefani Marchiori; Simon J Bending
      First page: 025009
      Abstract: Understanding vortex behaviour at microscopic scales is of extreme importance for the development of higher performance coated conductors with larger critical currents. Here, we study and map the critical state in a YBCO-based coated conductor at different temperatures using two distinct operation modes of scanning Hall microscopy. An analytical Bean critical state model for long superconducting strips is compared with our measurements and used to estimate the critical current density. We find several striking deviations from the model; pronounced flux front roughening is observed as the temperature is reduced below 83 K due to vortex-bundle formation when strong broadening of the flux front profile is also seen. In higher magnetic fields at the lower temperature of 65 K, fishtail-like magnetization peaks observed in local magnetization measurements are attributed to flux-locking due to an increase in the critical current density near the edges of the tape, which we tentatively ...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-15T00:00:00Z
      DOI: 10.1088/1361-6668/aaf2f5
      Issue No: Vol. 32, No. 2 (2019)
       
  • Hot spot formation in a curved iron-based superconducting whisker
    • Authors: X J Zhou; Z S Gao, L Han, L Y Xiao, T Hatano, J Li, D Koelle, R Kleiner, H B Wang P H Wu
      First page: 025010
      Abstract: We investigated the transport properties of a curved iron-based superconducting whisker, a geometry which is considered to be interesting for electronic applications. The current–voltage characteristics (IVCs) are bi-stable at low temperatures, exhibit multiple branches at intermediate temperatures and are continuous but nonlinear at temperatures close to the superconducting transition temperature T c . Low temperature scanning laser microscopy revealed that the multiple branches arise from a localized hot spot which for the different branches appears at different positions along the whisker. By contrast, at low temperatures Joule heating completely overheats the sample to temperatures above T c in the resistive state. Close to T c , the hot spot disappears and the IVCs are continuous. In the multiple-branch region, the whisker can be switched between different states by laser irradiation, provided that the laser is positioned ...
      Citation: Superconductor Science and Technology
      PubDate: 2019-01-15T00:00:00Z
      DOI: 10.1088/1361-6668/aaf9f0
      Issue No: Vol. 32, No. 2 (2019)
       
 
 
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