The effect of chemical disorder on the magnetic anisotropy of strained Fe-Co films

被引：34
|
作者：
Neise, C. [1 ]
Schoenecker, S. [1 ]
Richter, M. [1 ]
Koepernik, K. [1 ]
Eschrig, H. [1 ]
机构：
[1] IFW Dresden, D-01171 Dresden, Germany
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2011年 / 248卷 / 10期
关键词：
chemical disorder; Fe-Co alloys; magnetic anisotropy; perpendicular recording; strained films;
D O I：
10.1002/pssb.201147100
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Strained Fe-Co films have recently been demonstrated to exhibit a large magnetocrystalline anisotropy (MCA) and thus to be of potential interest as magnetic storage material. Here, we show by means of density-functional (DF) calculations, that chemical order can remarkably enhance the MCA. We also investigate the effect of relaxation perpendicular to the applied strain and evaluate the strain energy as a function of Co concentration and substrate lattice parameter. On this basis, favourable preparation routes for films with a large perpendicular anisotropy are suggested. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：2398 / 2403
页数：6
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