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Flux pinning in oxygen deficient melt-textured YBa2Cu3O7− x

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0304-8853(94)00939-2
Keywords
  • Chapter 17. High T C Superconductors

Abstract

Abstract Critical current densities ( J c) and the irreversibility lines (ILs) of 7 melt-textured samples with different oxygen content (27.4 K < T c < 92.4 K) were investigated. The values of J c ab decrease systematically with increasing oxygen deficiency. All the ILs shift to lower fields and temperatures with decreasing oxygen content. A crossover in the slope of log( H irr) versus log(1 − T irr/ T c) as well as pronounced changes in the shape and anisotropy of the ILs were observed.

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