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Magnetic Anisotropy Constants of Epitaxial (110) Fe/GaAs Films from 77k To 293k Studied by Magneto-Resistance

Published online by Cambridge University Press:  03 September 2012

Daniel K. Lottis ,
G. A. Prinz  and
E. Dan Dahlberg
Daniel K. Lottis
Affiliation:
School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455
G. A. Prinz
Affiliation:
Naval Research Laboratory, Washington, D.C. 20375-5000
E. Dan Dahlberg
Affiliation:
School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455
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Abstract

A first-order phase transition in the magnetization of Fe films, driven by an applied magnetic field, was first reported by Hathaway and Prinz [1]. Further studies were performed on this phase transition using anisotropic magnetoresistance measurements by Riggs and Dahlberg [2]. Here we report the extension of these studies to include temperatures between 77K and 293K. Emphasis is on a determination of the fourth-order and uniaxial anisotropy constants (K1 and Ku). It is shown that the temperature dependence of the anisotropy energies in these films varies with thickness, which may be useful in sorting out the origin and magnitude of different contributions to the total effective anisotropy. The present study suggests that similar studies of (110) iron on other substrates might contribute to achieving a better understanding of in-plane anisotropies in epitaxial films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 151: Symposium G – Growth, Characterization and Properties of Ultrathin Magnetic Films and Multilayers , 1989 , 219
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

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