Theoretical consideration of the stability of an L10 magnetic phase in Fe-(Pd, Pt) alloy clusters

被引：14

作者：

Fukami, S

Tanaka, N ^{[1
]}

机构：

[1] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi 4648603, Japan

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2004年 / 84卷 / 01期

关键词：

D O I：

10.1080/09500830310001628257

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Size effects on the order - disorder transition of binary alloy clusters, particularly Fe -(Pd, Pt) clusters, are studied theoretically, based on the theory of Bragg and Williams. Including the broken bonds at surfaces ( interfaces) of the clusters, the relationship between the degree of order and the cluster size, which has recently been suggested from various experimental studies, is formulated. The dependences of the critical size on the temperature and the order - disorder transformation temperature on the cluster size are derived. There is a slight quantitative disagreement with experiment, but this may be improved by considering some modi. cation of higher-order terms.

引用

页码：33 / 40

页数：8

共 14 条

[1]

[Anonymous], 1935, P ROY SOC A-MATH PHY, DOI DOI 10.1098/RSPA.1935.0122

[2]

Bragg WL., 1934, Proc. R. Soc. Lond. A Math. Phys. Sci, V145, P699, DOI DOI 10.1098/RSPA.1934.0132

[3] Large coercivity and granular structure of CoPt/SiO2 films [J].