Magnetism and point defect in B2-type CoFe alloys

被引：18
|
作者：
Kogachi, M [1 ]
Tadachi, N [1 ]
Kohata, H [1 ]
Ishibashi, H [1 ]
机构：
[1] Osaka Prefecture Univ, Coll Integrated Arts & Sci, Dept Mat Sci, Sakai, Osaka 5998531, Japan
来源：
INTERMETALLICS | 2005年 / 13卷 / 05期
基金：
日本学术振兴会;
关键词：
magnetic intermetallics; magnetic properties; defects; point defects;
D O I：
10.1016/j.intermet.2004.09.012
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：
Magnetic behavior of B2-type Co(1-c)Fe(c) alloys (0.4 <= c <= 0.6) is studied as functions of composition and quenching temperature. Obtained mean magnetic moment shows increase with composition up to c approximate to 0.52 and then changes its slope. Furthermore, the moment decreases with quenching temperature in the B2-phase region, while it remains constant in the A2-phase region. The relation between the observed magnetic moment and the point defect properties is discussed. As a result, the change in the magnetic moment is found to be proportional to the square of the long-range order parameter. This relation is explained by noting the magnetic moment on Fe atom, which is assumed to depend on the number of nearest neighbor Co atoms. (c) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：535 / 542
页数：8
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