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Magnetic Properties of Co/Pt Multilayers on MgO (100) Substrates

Published online by Cambridge University Press:  15 February 2011

R. Krishnan ,
H. Lassri ,
M. Porte ,
M. Tessier  and
N. K. Flevaris
R. Krishnan
Affiliation:
Laboratoire de Magnétisme et Matériaux Magnétiques, C.N.R.S. 92195 Meudon, France
H. Lassri
Affiliation:
Laboratoire de Magnétisme et Matériaux Magnétiques, C.N.R.S. 92195 Meudon, France
M. Porte
Affiliation:
Laboratoire de Magnétisme et Matériaux Magnétiques, C.N.R.S. 92195 Meudon, France
M. Tessier
Affiliation:
Laboratoire de Magnétisme et Matériaux Magnétiques, C.N.R.S. 92195 Meudon, France
N. K. Flevaris
Affiliation:
Department of Solid State Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Abstract

We have prepared Co/Pt multilayers by evaporation in UHV on MgO (100) substrates kept at various temperatures. Most of the samples were grown on a Pt buffer layer. Magnetic and magneto-optical properties have been studied. The surface anisotropy Ks for MgO substrates is 0.35 erg.cm−2 which is smaller than 0.6 erg.cm−2 obtained for glass substrates. The effect of the growth conditions on Ks is observed only for t(Co)<10 Å where the crossover to Keff>O occurs. Deposition at higher temperature leads to an increase in the coercivity. The magnetization and the anisotropy is practically temperature independent in the range 5 to 295 K. However the coercivity increases sharply below 100K.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 232: Symposium T – Magnetic Materials: Microstructure and Properties , 1991 , 91
Copyright
Copyright © Materials Research Society 1991

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References

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