Flux pinning and peak effect in Y-123 superconductor

Authors :: Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka 820-8502, Japan
Yoshimi, D.
Migita, M.
Otabe, Edmund Soji
Matsushita, Teruo
Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka 820-8502, Japan
Yoshimi, D.
Migita, M.
Otabe, Edmund Soji
Matsushita, Teruo
Publication Year :: 2017
Abstract: type:Journal Article<br />It is known that the peak effect in Y-123 superconductors is caused by oxygen deficient regions with lower Tc. In order to study the flux pinning mechanism of these defects, the effect of addition of 211 particles on the peak effect was measured. It was found that the addition of 211 phase deteriorated the pronounced peak effect at medium magnetic fields. This shows that the pinning mechanism of the oxygen deficient regions is different from the condensation energy interaction known for 211 particles. The results on the critical current density and the irreversibility field were compared with the theoretical predictions of the flux creep-flow model.<br />source:http://www.sciencedirect.com/science/journal/09214534

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