Results 21 to 30 of about 2,363,196 (290)
The influence of additives on the current carrying capacity of bulk YBa2Cu3OX [PDF]
, 1990 We studied the influence of using different powders and several additives on the shaping process and critical current density of sintered bulk YBa2Cu3OX. It was found that all additives used facilitated the shaping process.
Hemmes, H. +4 more
core +2 more sources
Critical Current Density as a Performance Indicator for Gas-Evolving Electrochemical Devices
Cell Reports Physical Science, 2020 Summary: Reaching high current densities is absolutely imperative for electrochemical energy conversion, from fuel cells to CO2 reduction. Here, we identify the existence of a performance indicator for gas-evolving electrochemical energy conversion ...
Jason K. Lee +8 more
doaj +1 more source
Critical current density in superconducting niobium films [PDF]
IEEE Transactions on Magnetics, 1975 We have measured the critical current in Nb strips of 1 Μm thickness and different widths w prepared by electron-gun vacuum deposition. The substrate temperature during the deposition was varied between room temperature and 800 ° C. The width of the Nb strips ranged between 20 and 300 Μm.
Huebener, R. P. +4 more
openaire +1 more source
Critical current density: Measurements vs. reality
EPL (Europhysics Letters), 2013 Different experimental techniques are employed to evaluate the critical current density (Jc), namely transport current measurements and two different magnetisation measurements forming quasi-equilibrium and dynamic critical states. Our technique-dependent results for superconducting YBa2Cu3O7 (YBCO) film and MgB2 bulk samples show an extremely high ...
Pan, Alexey V +2 more
openaire +3 more sources
Critical current densities of superconducting oxides.
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 1990 Applications of superconducting oxides in magnetic field include many difficult problems to be solved. Especially, anisotropy both in the upper critical field Bc2 and the critical current density Jc, which originates from the lower symmetry of their crystal structures, will become crucial.
Kazuo WATANABE, Yoshio MUTO
openaire +2 more sources
Inverse analysis of critical current density in a bulk high-temperature superconducting undulator
Physical Review Accelerators and Beams, 2022 In order to optimize the design of undulators using high-temperature superconductor (HTS) bulks we have developed a method to estimate the critical current density (J_{c}) of each bulk from the overall measured magnetic field of an undulator.
Ryota Kinjo +8 more
doaj +1 more source
Vortex creep and critical current densities in superconducting (Ba,K)Fe$_{2}$As$_{2}$ single crystals [PDF]
, 2012 The surprisingly rapid relaxation of the sustainable current density in the critical state of single crystalline Ba$_{1-x}$K$_{x}$Fe$_{2}$As$_{2}$ is investigated for magnetic fields oriented parallel to the c-axis and to the $ab$--plane respectively ...
Konczykowski, Marcin +7 more
core +4 more sources
Magnetochemistry, 2021 A compact superconducting magnetic energy storage system (SMES) produced by Si micro fabrication technologies has been proposed to improve electricity storage volume density, w, in the sub-Wh/L range of conventional SMESs and to produce them at a low ...
Tomoyoshi Motohiro +3 more
doaj +1 more source
The Influence of Preparation Temperature on the Different Facets of Bulk MgB2 Superconductors
Micromachines, 2023 Two MgB2 samples were prepared using the spark plasma sintering (SPS) technique at different temperatures—950 °C (S1) and 975 °C (S2)—for 2 h under 50 MPa pressure to study the influence of preparation temperature on different facets, namely those ...
Penghe Zhang +7 more
doaj +1 more source
Critical current density determination of superconducting material [PDF]
2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM), 2014 Knowledge of the law critical current density versus magnetic field, Jc(B), of a superconducting material is very important to users. In this article are presented two methods of characterization to obtain experimentally the law Jc(B). These two methods are commonly used for applications in electrical engineering.
Douine, Bruno +2 more
openaire +2 more sources