Magnetic nanoscale laminates with tunable exchange coupling from first principles

被引：79
|
作者：
Dahlqvist, M. [1 ]
Alling, B. [1 ]
Abrikosov, I. A. [1 ]
Rosen, J. [1 ]
机构：
[1] Linkoping Univ, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden
来源：
PHYSICAL REVIEW B | 2011年 / 84卷 / 22期
基金：
瑞典研究理事会; 欧洲研究理事会;
关键词：
INITIO MOLECULAR-DYNAMICS; M(N+1)AX(N) PHASES; MAGNETORESISTANCE; TRANSITION;
D O I：
10.1103/PhysRevB.84.220403
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The M(n+1)AX(n) (MAX) phases are nanolaminated compounds with a unique combination of metallic and ceramic properties, not yet including magnetism. We carry out a systematic theoretical study of potential magnetic MAX phases and predict the existence of stable magnetic (Cr1-xMnx)(2)AlC alloys. We show that in this system ferromagnetically ordered Mn layers are exchange coupled via nearly nonmagnetic Cr layers, forming an inherent structure of atomic-thin magnetic multilayers, and that the degree of disorder between Cr and Mn in the alloy can be used to tune the sign and magnitude of the coupling.
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页数：5
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