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Magneto-Optical Properties of Ultratitn Ferromagnetic Films

Published online by Cambridge University Press:  21 February 2011

S. D. Bader ,
E. R. Moog ,
C. Liu  and
J. Zak
S. D. Bader
Affiliation:
Materials Science Division, Argonne National Laboratory Argonne, Illinois 60439
E. R. Moog
Affiliation:
Materials Science Division, Argonne National Laboratory Argonne, Illinois 60439
C. Liu
Affiliation:
Materials Science Division, Argonne National Laboratory Argonne, Illinois 60439
J. Zak
Affiliation:
Materials Science Division, Argonne National Laboratory Argonne, Illinois 60439
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Abstract

The surface magneto-optic Kerr effect (SMOKE) has been used to explore the properties of ultrathin ferromagnetic films. The ultrathin regime corresponds to thicknesses less than the depth penetration of light and includes the monolayer range. The ultrathin regime possesses unique magneto-optic properties: the Kerr rotation and ellipticity, in general, behave differently than in the thick film limit. Measurements and simulation in the longitudinal geometry for bcc Fe on Au(100) provide a dramatic example of the metallic reflector enhancement effect due to the nonmagnetic Au underlayer. The rotation enhancement is accompanied by a high reflectivity, as opposed to being at the expense of the reflectivity. Measurements in both polar and longitudinal geometries for epitaxially-stabilized fcc Fe films grown on Cu(100) and Pd(100) indicate the presence of perpendicular surface anisotropy, which suggests new approaches to realizing vertical data-storage media.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 150: Symposium F – Materials for Magneto-Optic Data Storage , 1989 , 215
Copyright
Copyright © Materials Research Society 1989

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References

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