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Transport properties of Bi2Sr2CaCu2O8− yat high temperatures

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
135
Identifiers
DOI: 10.1016/s0167-2738(00)00369-6
Keywords
  • Bi2Sr2Cacu2O8− Y
  • Electrical Properties
  • Intercalation Process
Disciplines
  • Physics

Abstract

Abstract The work presents the results of electrical conductivity and thermoelectric power measurements for Bi 2Sr 2CaCu 2O 8− y performed as a function of temperature (300–1100 K) and oxygen pressure (1–10 −3 atm) under thermodynamic equilibrium conditions. An analysis of the electrical properties as a function of deviation from stoichiometry enabled the determination of the type of dominant electronic defects and transport properties in a wide temperature range. The reduction of Cu 3+ to Cu 2+ seems to be an effective reaction related to nonstoichiometry in oxygen sublattice.

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