Degree of Order Dependence on Magnetocrystalline Anisotropy in Body-Centered Tetragonal FeCo Alloys

被引：46

作者：

Kota, Yohei ^{[1
]}

Sakuma, Akimasa ^{[1
]}

机构：

[1] Tohoku Univ, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

来源：

APPLIED PHYSICS EXPRESS | 2012年 / 5卷 / 11期

关键词：

MAGNETIC-ANISOTROPY; SYSTEMS;

D O I：

10.1143/APEX.5.113002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the magnetocrystalline anisotropy (MCA) energy of tetragonal distorted FeCo alloys depending on the degree of order by first-principles electronic structure calculation combined with the coherent potential approximation. The obtained results indicate that the MCA energy of FeCo alloys strongly depends on the degree of order under optimal conditions, where the axial ratio of the body-centered tetragonal (bct) structure is 1.25 and the composition is Fe0.5Co0.5. We find that the modification of the electronic structure resulting from electron scattering by chemical disorder has a considerable influence on the MCA under these conditions. (C) 2012 The Japan Society of Applied Physics

引用

页数：3

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