Is YbFe4Sb12 a weak ferromagnet?

被引：3
作者：
Alleno, E.
Berardan, D.
Godart, C.
Bonville, P.
机构：
[1] CNRS, ISCSA, LCMTR, F-94320 Thiais, France
[2] CEA Saclay, SPEC, DRECAM, DSM, F-91191 Gif Sur Yvette, France
来源：
PHYSICA B-CONDENSED MATTER | 2006年 / 378-80卷
关键词：
skutterudites; weak ferromagnetism; fine particles; spin fluctuations;
D O I：
10.1016/j.physb.2006.01.089
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The magnetic susceptibility of YbFe4Sb12 exhibits a strong enhancement below 30 K which suggests the presence of a ferromagnetic transition. However, the amplitude of this effect is strongly sample dependent. Furthermore, the shape of the ZFC-FC branches and the disappearance of this susceptibility increase in larger fields are rather indicative of a contribution from magnetic impurities. The magnitude of the spontaneous magnetic moment which is observed below 8-10 K is also strongly sample dependent and is likely to arises from these magnetic impurities. YbFe4Sb12 remains thus probably paramagnetic down to 2 K. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：237 / 238
页数：2
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