THE INFRARED-SPECTROSCOPY, ELECTRICAL-CONDUCTIVITY AND SEEBECK COEFFICIENT OF EU1-XSRXCOO3-Y PEROVSKITES

被引：10

作者：

LEE, DH ^{[1
]}

RYU, KH ^{[1
]}

KIM, KH ^{[1
]}

KIM, YY ^{[1
]}

机构：

[1] JEONJU UNIV,DEPT CHEM,JEONJU 560759,SOUTH KOREA

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1994年 / 38卷 / 04期

关键词：

D O I：

10.1016/0254-0584(94)90216-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu1-xSrxCoO3-y systems where x=0.00, 0.25, 0.50, and 0.75 were synthesized by the solid state reaction, and their structures were analyzed by XRD and IR spectroscopy. The structures show orthorhombic between x=0.00 and 0.20 and cubic between x=0.30 and 0.90. The nature of Co-O bond which has close relationship with electrical conductivity was found to be affected by the Sr substitution based on the IR spectra. Based on the electrical conductivity and Seebeck coefficient measurements, the electrical conduction mechanism is broadening of t(2g)* and e(g)* bands and depends on the amount of Co4+ induced by the addition of Sr and nonstoichiometry.

引用

页码：377 / 382

页数：6

共 18 条

[1] REDUCTION OF PEROVSKITE OXIDE LA-EU COO3 IN A HYDROGEN ATMOSPHERE [J].