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Magnetic and Magneto-Optical Studies in Single and Multilayered Amorphous Tb-Fe/Al2O3 Films

Published online by Cambridge University Press:  21 February 2011

R. Krishnan ,
M. Porte ,
M. Tessier  and
J. P. Vitton
R. Krishnan
Affiliation:
Laboratoire de Magnétisme, CNRS, 92195 Meudon Cedex, France
M. Porte
Affiliation:
Laboratoire de Magnétisme, CNRS, 92195 Meudon Cedex, France
M. Tessier
Affiliation:
Laboratoire de Magnétisme, CNRS, 92195 Meudon Cedex, France
J. P. Vitton
Affiliation:
Kodak Pathé, 71102 Châlon-sur-Saône, France
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Abstract

Both single layers (SL) of Tb-Fe and multilayer (ML) TbFe/Al2O3 films have been prepared and the magnetic and magnetooptical properties have been studied as a function of Tb-Fe layer thickness (d,) and modulation characteristics. Perfect rectangular loop is observed only for d1 > 20 na. However in ML, even for d1 -8 nm such characteristics are obtained. Hc shows a stronger dependence on d1 particularly in ML samples. The properties of ML samples are determined by d1 A12O3 layer thickness and the number of bi-layers. The Faraday rotation for Tb19Fe81 films at 633 nm is found to be 2×105 deg.cm-1. Magnetic inhomogeneities cause steps and peaks in Faraday and Kerr loops respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 150: Symposium F – Materials for Magneto-Optic Data Storage , 1989 , 63
Copyright
Copyright © Materials Research Society 1989

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References

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