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Percolation in YBa2Cu3O7−δ/CuO mixtures

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
233
Identifiers
DOI: 10.1016/0921-4534(94)90761-7
Disciplines
  • Physics

Abstract

Abstract The critical exponents of the electrical conductivity σ for several temperatures above T c and of the critical current density J c at 77 K, are investigated in composites formed between the superconductor YBa 2Cu 3O 7−δ and the insulator CuO. Their experimental calculated values agree with their theoretical counterpart obtained from the continuum percolation model (“Swiss-cheese” model). A slight improvement of superconducting properties of YBa 2Cu 3O 7−δ is observed also at a low CuO concentration (5%).

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