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Magnetic Anisotropy of Crystalline Defects

Published online by Cambridge University Press:  26 February 2011

B.M. Clemens ,
R.L. White ,
W.D. Nix  and
J.A. Bain
B.M. Clemens
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205
R.L. White
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205
W.D. Nix
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205
J.A. Bain
Affiliation:
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305-2205
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Abstract

We consider the anisotropies due to coherency strains and the inilioliogcliotis stratlus associated with misfit dislocations, both of which give rise to anisotropy through maguctostrictive coupling. Coherency strains can give rise to anl apparent surface anisotrnpy due to the decrease in coherency strain with the film thickness. This anisotropy is comparable in magnitude to that observed experimentally for Fe [110] epitaxial thiut films on W [110]. The strain field associated with misfit dislocations produces a. surface anisotropy which is also comparable in magnitude to experimentally observed anisotropies. Dislocatioms along the inplane [001] and [110] directions both produce the same preferred direction of maguctization orientation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 459
Copyright
Copyright © Materials Research Society 1992

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