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Field, temperature, and angle dependence of the critical current density in Bi2Sr2CaCu2O10/Ag ribbons |
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| Authors: | M Dhalle M N Cuthbert L F Cohen G K Perkins A D Caplin M Yang C R M Grovenor S X Dou " target="_blank">H K Liu and Q Y Hu |
| Affiliation: | (1) Centre for High-Temperature Superconductivity, Blackett Laboratory, Imperial College, Prince Consort Road, SW7 2BZ London, UK;(2) Department of Materials, University of Oxford, Parks Road, OX1 3PH Oxford, UK;(3) School of Materials Science and Engineering, University of New South Wales, 2033 Kensington, NSW, Australia;(4) Physics Department, Polytechnic University, 6 Metrotec, 11201 Brooklyn, NY |
| Abstract: | Current-voltage characteristics of high-critical-current Bi2Sr2CaCu2O10/Ag ribbons were measured using both transport and magnetization techniques. The slope of these curves changes with magnetic field and temperature in a way very similar to the observedj c (H, T) behavior. This correspondence between the critical current and the slope of theI–V characteristics can be explained within the thermally activated flux creep framework. The dependence ofj c on the angle between field and ribbon is compared to the existing intrinsic anisotropy models. |
| Keywords: | Bi2Sr2CaCu2O10/Ag ribbons I– V characteristics flux creep anisotropy |
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