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Transport properties of YBa2Cu3O7-yat high temperatures

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
175
Identifiers
DOI: 10.1016/0921-4534(91)90264-y
Disciplines
  • Physics

Abstract

Abstract This paper presents the results of the investigations on electrical conductivity and thermoelectric power of YBa 2Cu 3O 7− y as a function of temperature (680–1170K) and oxygen pressure (10 5–30 Pa) at thermodynamic equilibrium. The analysis of electrical properties as a function of the deviation from stoichiometry allowed one to determine the type of dominating electronic defects and transport properties in different temperatures and nonstoichiometry. A qualitative model for the electronic structure of YBa 2Cu 3O 7− y at high temperatures is proposed.

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