ELECTRICAL-CONDUCTIVITY IN LA1-XSRXMNO3+DELTA

被引：78

作者：

VANROOSMALEN, JAM ^{[1
]}

HUIJSMANS, JPP ^{[1
]}

PLOMP, L ^{[1
]}

机构：

[1] NETHERLANDS ENERGY RES FDN,ECN,1755 ZG PETTEN,NETHERLANDS

来源：

SOLID STATE IONICS | 1993年 / 66卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(93)90417-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrical conductivity of La1-xSrxMnO3+delta is found to depend on temperature, density and microstructure, and chemical composition. A one dimensional model is used to describe the small polaron hopping conductivity qualitatively. The relation between conductivity and density obeys the Bruggeman theory and it is shown that differences in microstructure can strongly influence the conductivity. At 1220 K the electrical conductivity of dense La1-xSrxMnO3+delta increases with x from 115 S.cm-1 for x=0 to 300 S.cm-1 for x=0.50. The oxygen content delta seems to be of no influence. The latter is explained by defect chemical considerations.

引用

页码：279 / 284

页数：6

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