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Magnetic Phase Transition in the Csci Fesi Spacer in Fe/FeSi Multilayers

Published online by Cambridge University Press:  15 February 2011

J. Dekoster ,
A. Vantomme ,
S. Degroote ,
R. Moons  and
G. Langouche
J. Dekoster
Affiliation:
Katholieke Universiteit Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
A. Vantomme
Affiliation:
Katholieke Universiteit Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
S. Degroote
Affiliation:
Katholieke Universiteit Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
R. Moons
Affiliation:
Katholieke Universiteit Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
G. Langouche
Affiliation:
Katholieke Universiteit Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, B-3001 Leuven, Belgium
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Abstract

We report the formation of the CsCI FeSi phase in Fe/FeSi multilayers with constant Fe thickness and varying FeSi layer thickness. The crystallographic and magnetic properties of this metastable FeSi phase are determined in thick (62 nm) epitaxial silicide layers with ion channeling, X-ray diffraction and Mossbauer spectroscopy measurements which clearly show that the CsCl phase becomes increasingly magnetic upon cooling down to 4.2 K. These results indicate that the transition from antiferromagnetic to ferromagnetic coupling observed at low temperatures in such multilayers is controlled by a magnetic phase transition in the FeSi spacer layer.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 382: Symposium G – Structure and Properties of Multilayered Thin Films , 1995 , 253
Copyright
Copyright © Materials Research Society 1995

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References

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