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- Title
Influence of non-uniform J<sub>c</sub> distributions on flux jumps in high-temperature superconductors.
- Authors
Zhao, Y.-F.; Zhou, Y.-H.
- Abstract
The influence of non-uniform Jc distributions on flux jumps in high-temperature superconductors is investigated with the simplified models in the form of a composite superconducting slab consisting of different pinning regions. The magnetization loops and flux jumps for the simplified models are calculated with the modified recursion formulas which could predict the flux-jump fields. The valid ranges of the temperature and sweep rate for Bfj1 are specified and the fields of the subsequent jumps after the first flux jump of the inhomogeneous models are obviously lower than that of the homogeneous models. The results indicate that flux jump instability could be stimulated by non-uniform Jc distributions and with the increase of the discrepancy of Jc between different pinning regions the instability also increase.
- Subjects
SUPERCONDUCTORS; MATHEMATICAL models; COMPOSITE materials; MAGNETIZATION; FLUX (Metallurgy)
- Publication
European Physical Journal B: Condensed Matter, 2008, Vol 61, Issue 4, p391
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2008-00090-4