Nature of short-range order in the paramagnetic state of manganites

被引：2

作者：

Ramirez, Fabian E. N. ^{[1
]}

Francisquini, Elton ^{[1
]}

Souza, Jose Antonio ^{[1
]}

机构：

[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09090400 Santo Andre, SP, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 571卷

基金：

巴西圣保罗研究基金会;

关键词：

Manganites; Superexchange; Double exchange; Curie-Weiss law; Effective moment;

D O I：

10.1016/j.jallcom.2013.03.045

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：

We study the nature of short-range magnetic interactions observed in the paramagnetic phase of colossal magnetoresistance compounds. Our results reveal that ferromagnetic-like interaction between Mn ions cannot be explained by the conventional double exchange mechanism. The results show evidence that the e(g) electrons are localized in Mn3+ ions regardless the introduction of holes leading to ferromagnetic/antiferromagnetic superexchange-like interactions. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：21 / 24

页数：4

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