INFLUENCE OF COMPETING BONDS ALONG THE C-AXIS ON THE LOCAL DISTORTION OF THE (COO6) OCTAHEDRON IN K2NIF4-TYPE OXIDES A'0.50LA1.50MG0.50CO0.50O4 (A' = CA, SR AND BA)

被引：8

作者：

BYEON, SH ^{[1
]}

DEMAZEAU, G ^{[1
]}

FOURNES, L ^{[1
]}

DANCE, JM ^{[1
]}

CHOY, JH ^{[1
]}

机构：

[1] SEOUL NATL UNIV,COLL NAT SCI,DEPT CHEM,SEOUL 151742,SOUTH KOREA

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 80卷 / 07期

关键词：

D O I：

10.1016/0038-1098(91)90050-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The local distortion of the (CoO6) octahedron in the K2NiF4-type oxides with the general formula A'0.50La1.50 Mg0.50Co0.50O4(A' = Ca, Sr, Ba) was investigated by E.P.R. and Mossbauer resonance spectroscopies. The increase of the ionicity of the average [(A'0.25 La0.75)-0] bond from A' = Ca to Ba induces an enhancement of the covalency of the competing (Co-O) bond along the c-axis, leading to a decrease of the elongation for such a (CoO6) octahedron in the lattice.

引用

页码：457 / 463

页数：7

共 11 条

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