Polarized-neutron-reflectivity confirmation of 90 degrees magnetic structure in Fe/Cr(001) superlattices

被引：38

作者：

Adenwalla, S

Felcher, GP

Fullerton, EE

Bader, SD

机构：

[1] Materials Science Division, Argonne National Laboratory, Argonne

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.53.2474

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polarized-neutron reflectivity together with magnetization and magnetotransport measurements on a (001)oriented [Fe(14 Angstrom)/Cr(74 Angstrom)](20) superlattice confirms the existence of 90 degrees alignment of adjacent Fe layers due to biquadratic interlayer coupling. Each Fe layer is in a single domain state and the magnetic structure is coherent throughout the layered stack. The biquadratic coupling, however, is suppressed below the Cr Neel temperature (T-N=187 K) as the Fe layers uncouple. But by field cooling through TN it is possible to retain a metastable biquadratic arrangement.

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页码：2474 / 2480

页数：7

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