Effect of Mn-substitution on magnetic and structural properties in FeCr2O4

被引：12

作者：

Arima, T. ^{[1
]}

Watanabe, Y. ^{[1
]}

Taniguchi, K. ^{[1
]}

Watanabe, M. ^{[1
]}

Noda, Y. ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期

关键词：

Jahn-Teller distortion; ferrimagnetism; spinel;

D O I：

10.1016/j.jmmm.2006.10.342

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We studied the magnetism and crystal structure of Fe1-xMnxCr2O4 solid solutions to explore the interplay between the orbital and spin degrees of freedom in the spinel oxide system. Cooperative Jahn-Teller transition temperature decreases with partial substitution of Mn2+ for Fe2+, because a Mn2+ ion in the high-spin state (e(2)t(3)) has no orbital degree of freedom. In the partially substituted compounds, the ferrimagnetic transition induces the second structural transition from tetragonal to orthorhombic system, which might be explained by a possible competition between the single-cluster Jahn-Teller distortion and spin-orbit coupling. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：807 / 809

页数：3

共 3 条

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