High Curie temperature of Ce-Fe-Si compounds with ThMn12 structure

被引：27
|
作者：
Zhou, Chen [1 ]
Pinkerton, Frederick E. [2 ]
Herbst, J. F. [2 ]
机构：
[1] MEDA Engn & Tech Serv LLC, Southfield, MI 48075 USA
[2] Gen Motors R&D Ctr, Chem & Mat Syst Lab, Warren, MI 48090 USA
来源：
SCRIPTA MATERIALIA | 2015年 / 95卷
关键词：
Melt-spinning; ThMn12; Curie temperature; Mean field approximation; MAGNETIC-PROPERTIES; MAGNETOCRYSTALLINE ANISOTROPY; ELECTRONIC-STRUCTURE; ND; TRANSITION;
D O I：
10.1016/j.scriptamat.2014.10.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report the discovery of ternary CeFe(12-x)Si(x)compounds possessing the ThMn12 structure. The samples were prepared by melt spinning followed by annealing. In contrast to other known Ce Fe-based binary and ternary compounds, CeFe12-xSix compounds exhibit exceptionally high Curie temperatures whose values increase with added Si substitution. The highest T. = 583 K in CeFe10Si2 rivals that of the well-established Nd2Fe14B compound. We ascribe the T-c behavior to a combination of Si-induced 3d band structure changes and partial Ce3+ stabilization. (C) 2014 Published by Elsevier Ltd.
引用
收藏
页码：66 / 69
页数：4
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