Effects of Cr doping on the cationic ordering and magnetic properties of Sr2(Fe1-xCrx)MoO6

被引：28

作者：

Feng, XM

Rao, GH

Liu, GY

Yang, HF

Liu, WF

Ouyang, ZW

Liang, JK

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 344卷 / 1-4期

基金：

中国国家自然科学基金;

关键词：

crystal structure; magnetization; magnetoresistance; Cr-doped Sr2FeMoO6;

D O I：

10.1016/j.physb.2003.08.115

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure and magnetic properties of Sr-2(Fe1-xCrx)MoO6 (0 less than or equal to x less than or equal to 0.4) have been investigated. In contrast to Sr-2(Fe1-xMnx)MoO6 and Sr2Fe(Mo1-xWx)O-6, the Cr doping results in a decrease of cationic ordering in Sr-2(Fe1-xCrx)MoO6. The saturation magnetization decreases with x and exhibits a linear dependence on the anti-site defect concentration. All the samples exhibit a semiconductor-metal transition. The low-field magnetoresistance increases with the saturation magnetization in a non-linear way. By assuming a preferential occupation of the Cr ions at the Mo sites, the dependence of magnetization on the Cr content can be well explained within a simple ferrimagnetic model. (C) 2003 Elsevier B.V. All rights reserved.

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页码：21 / 26

页数：6

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