Antiferromagnetic interlayer coupling in Fe/c-SiFe/Fe sandwiches and multilayers -: art. no. 024440

被引：30

作者：

Pruneda, JM ^{[1
]}

Robles, R

Bouarab, S

Ferrer, J

Vega, A

机构：

[1] Univ Oviedo, Fac Ciencias, Dept Fis, Oviedo 33007, Spain

[2] Univ Valladolid, Dept Fis Teor Atom Mol & Nucl, E-47011 Valladolid, Spain

[3] Univ Tizi Ouzou, Fac Sci, Dept Phys, Tizi Ouzou 15000, Algeria

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.65.024440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an ab initio study of the interlayer exchange coupling in Fe/c-FeSi/Fe sandwiches and Fe/c-FeSi multilayers. We perform several structural studies. which show the stability of the CsCl arrangement seen experimentally for the spacer. We study the effect of pinholes, interface roughness, or structural misconfigurations of the spacer on the sign and magnitude of the exchange constant J. We have extended Bruno's theory to account for the effect of different effective masses on the exchange constant, leading to an excellent description of its asymptotic behavior, as compared with experiments. The results presented here allow us to identify Fe/c-FeSi sandwiches as an example of a new class of magnetic multilayer devices, where the spacer material is semimetallic.

引用

页码：244401 / 244405

页数：5

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