IRON AFFINITY FOR THE BIXBYITE STRUCTURE TYPE MOSSBAUER-SPECTROSCOPY STUDY OF (IN1-XFEX)2O3 AND (SC1-XFEX)2O3

被引：6

作者：

GERARDIN, R

ALEBOUYEH, A

EVRARD, O

机构：

[1] Laboratoire de Chimie du Solide Minéral, associé au CNRS no 158 Université de Nancy 1, 54506 Vandoeuvre-les-Nancy Cedex

来源：

MATERIALS RESEARCH BULLETIN | 1991年 / 26卷 / 06期

关键词：

BIXBYITE STRUCTURE; FERRITES;

D O I：

10.1016/0025-5408(91)90185-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid solutions (In(1-x)Fe(x))2O3 and (Sc(1-x)Fe(x))2O3 with the bixbyite type structure are synthetized at 1500-degrees-C and studied by X-ray diffraction and Fe-57 Mossbauer spectroscopy. The maximum amount of Fe substitution varies as the inverse of the ionic radius of M3+ in the oxide M2O3 (M = Sc,In,Lu): x = 0.6 for Sc2O3, 0.33 for ln2O3 and almost zero for Lu2O3. Fe atoms occupy the two cristallographic sites 24d and 8b. The coordinence of these sites does not change with the iron substitution. This can explain the various limits of the iron solubility. A preliminary magnetic study of the iron richest phase (Sc0.4Fe0.6)2O3 has also been performed.

引用

页码：455 / 461

页数：7

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