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
收藏
页码：21 / 24
页数：4
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