THE RELATION BETWEEN TRANSPORT-PROPERTIES AND OXYGEN STOICHIOMETRY IN YBA2CU3-XMXO7-DELTA (M=TI-4+ AND CR-3+)

被引：1
|
作者：
MURALIDHARAN, PU
RAMAMOHAN, TR
机构：
[1] Regional Research Laboratory, CSIR, Thiruvananthapuram
来源：
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1992年 / 130卷 / 01期
关键词：
D O I：
10.1002/pssa.2211300118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The room temperature resistivity and thermopower of superconducting samples of substituted YBa2Cu3O7-delta (YBCO) having various dopant concentrations (x) are measured. Resistivity measurements are also made on samples prepared in pure oxygen and quenched from 950-degrees-C. The data on resistivity (rho) and thermopower (S) are correlated with the dopant concentration and the oxygen content. It is shown by curve fitting of a simple equation that a discontinuity in rho - alpha-x or S - alpha-x (where alpha is a constant) versus oxygen content occurs in the same region where a minimum in room temperature resistivity and thermopower are observed.
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页码：153 / 161
页数：9
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