MOSSBAUER RESONANCE STUDIES IN CATIO3-CA2FE2O5 SYSTEM

被引：37

作者：

GRENIER, JC

MENIL, F

POUCHARD, M

HAGENMULLER, P

机构：

[1] Laboratoire de Chimie du Solide du C.N.R.S. Université de Bordeaux I 351, cours de la Libération, 33405, Talence Cedex

来源：

MATERIALS RESEARCH BULLETIN | 1978年 / 13卷 / 04期

关键词：

D O I：

10.1016/0025-5408(78)90011-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Mössbauer resonance study of the CaTiO3-Ca2Fe2O5 system - i.e. the Ca2Fe2xTi2-2xO6-x solid solution (0≤x≤1) - shows a continuous evolution of the local iron environment over the entire composition range. For 0.50≤x≤1 the investigation confirms a previous structural model of alterning layers of octahedra and tetrahedra. For lower concentrations of oxygen vacancies, evidence is given of Fe3+ ions randomly distributed in octahedral and even in tetrahedral sites. Titanium atoms apparently have only octahedral surroundings. A long range order is detected when x {reversed tilde equals} 0.50. © 1978.

引用

页码：329 / 337

页数：9

共 12 条

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