INFRARED-SPECTRA AND SEEBECK COEFFICIENT OF LNCOO3 WITH THE PEROVSKITE STRUCTURE

被引：35

作者：

KIM, YY ^{[1
]}

LEE, DH ^{[1
]}

KWON, TY ^{[1
]}

PARK, SH ^{[1
]}

机构：

[1] YONSEI UNIV,DEPT CHEM,SEOUL 120749,SOUTH KOREA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1994年 / 112卷 / 02期

关键词：

D O I：

10.1006/jssc.1994.1319

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The lattice vibrations in LnCoO3 perovskites (Ln = La, Pr, Nd, Sm, Eu, or Gd) have been investigated with reference to the lattice vibrations of the ideal cubic perovskite. These vibrations at room temperature indicate the structural changes with the change in the Ln ion. These frequencies are helpful in estimating the stability of the synthesized LnCoO3 phase. The temperature dependence of vibrational frequencies and the Seebeck coefficient reveal that the crystal symmetry is unchanged and the spin transition is due to the entropy increase of the 3d electrons with rising temperature. (C) 1994 Academic Press, Inc.

引用

页码：376 / 380

页数：5

共 14 条

[1] SPIN-STATE EQUILIBRIA IN HOLMIUM COBALTATE [J].