The synthesis of La0.875-xEuxNa0.125CrO3 and its study by Eu-151 Mossbauer spectroscopy

被引：9

作者：

Li, LP

Wei, QA

Kang, ZJ

Rui, MQ

Su, WH

机构：

[1] JILIN UNIV, CTR ANAL & MEASUREMENT, CHANGCHUN 130023, PEOPLES R CHINA

[2] JILIN UNIV, DEPT CHEM, CHANGCHUN 130023, PEOPLES R CHINA

[3] ACAD SINICA, INT CTR MAT PHYS, SHENYANG 110015, PEOPLES R CHINA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 249卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

La0.875-xEuxNa0.125CrO3; Eu-151 Mossbauer spectra; XPS; valence fluctuation; isomer shift;

D O I：

10.1016/S0925-8388(96)02854-X

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 perovskite oxides La0.875-xEuxNa0.125CrO3 were prepared at 1200 degrees C by solid state reaction. XRD, XPS and Eu-151 Mossbauer spectra measurements show that the structures are orthorhombic and their lattice distortion degree increases with x. Cr ions are in mixed valence of +3 and +6. With x increasing, the amount of Cr6+ becomes larger. The covalency and length of Eu-O bonds are the most important factors influencing the isomer shift of Eu-151.

引用

页码：264 / 267

页数：4

共 19 条

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