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Cems Interface Study of (Fe/M)-Multilayers (M=Cr,Gd)

Published online by Cambridge University Press:  26 February 2011

CH. Sauer
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich, D-5170 Jülich, Germany
J. Landes
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich, D-5170 Jülich, Germany
W. Zinn
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich, D-5170 Jülich, Germany
H. Ebert
Affiliation:
Siemens AG, Central Research Labs, ZFE ME TPH 11, D-8520 Erlangen, Germany
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Abstract

The temperature dependence of the magnetic hyperfine (hf.) fields near the interfaces in epitaxial Fe/Cr and partly epitaxial Fe/Gd bilayers were measured using 57Fe Conversion Electron Mössbauer Spectroscopy (CEMS). It was found that the Fe-Cr magnetic interaction extends only up to the second Fe-neighbor at the Fe/Cr interface, whereas the interaction range at the Fe/Gd interface is four times larger. For comparison the hf. fields and magnetic moments for Fe/Cr multilayers were obtained performing LMTO (Linear Muffin Tin Orbital) band structure calculations. The Néel temperature of a thin Cr-interlayer in a Fe/Cr/Fe sandwich structure was determined in dependence of the Cr-layer thickness.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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