Transport properties of Bi2Sr2CaCu2O8-y at high temperatures

Authors
Molenda, J Nowak, I Jedynak, L Marzec, J Stoklosa, A
Citation
J. Molenda et al., Transport properties of Bi2Sr2CaCu2O8-y at high temperatures, SOL ST ION, 135(1-4), 2000, pp. 235-240
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
135
Issue
1-4
Year of publication
2000
Pages
235 - 240
Database
ISI
SICI code
0167-2738(200011)135:1-4<235:TPOBAH>2.0.ZU;2-M
Abstract
The work presents the results of electrical conductivity and thermoelectric power measurements for Bi2Sr2CaCu2O8-y performed as a function of temperat ure (300-1100 K) and oxygen pressure (1-10(-3) atm) under thermodynamic equ ilibrium conditions. An analysis of the electrical properties as a function of deviation from stoichiometry enabled the determination of the type of d ominant electronic defects and transport properties in a wide temperature r ange. The reduction of Cu3+ to Cu2+ seems to be an effective reaction relat ed to nonstoichiometry in oxygen sublattice. (C) 2000 Elsevier Science B.V. All rights reserved.