Temperature dependence of interlayer coupling in Fe/Si superlattices

Author

Endo, Y. ; Kitakami, O. ; Shimada, Y.

Author_Institution

Res. Inst. for Sci. Meas., Tohoku Univ., Sendai, Japan

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

906

Lastpage

908

Abstract

We have explored the temperature dependence of the interlayer coupling in Fe/Fe_1-xSi_x superlattices (0.5⩽x⩽1). It is found that the Si content of the Fe_1-xSi_x spacer greatly affects the temperature dependence of the bilinear and biquadratic coupling constants. Neither the “thickness fluctuation” model nor the “loose” spin model proposed by Slonczewski give satisfactory explanations to the temperature-dependent interlayer coupling. Instead, the present experimental results for all spacer compositions ran he reproduced very well by the quantum interference model. We discuss the experimental results based on the above interlayer coupling models

Keywords

exchange interactions (electron); ferromagnetic materials; iron; magnetic multilayers; silicon; Fe-Si; Fe/Si superlattices; bilinear coupling constants; biquadratic coupling constants; interlayer coupling; quantum interference model; spacer compositions; temperature dependence; thickness fluctuation; Couplings; Energy measurement; Fluctuations; Insulation; Iron; Magnetic field measurement; Magnetic superlattices; Magnetization; Remanence; Temperature dependence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706307

Filename

706307