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Effects of annealing on electrical properties of oxygen-deficient YBa2Cu3Ox

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4534(94)91951-8
Disciplines
  • Physics

Abstract

Abstract Thermal stability of the physical properties in oxygen-deficient YBa 2Cu 3O x has been investigated. Measurements of dc resistivity showed that metal to semiconductor transition takes place during annealing at temperatures up to 300 °C. Diamagnetic magnetization remarkably decreased with an increase in annealing temperature. This indicates that the volume fraction of superconducting phase diminishes with temperature. The electrical transition accompanies a structural change to tetragonal-like phase which is thought to have the semiconducting nature.

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