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Growth, Structure and magnetism of Cobalt-Platinum Ultrathin Films and Sandwiches

Published online by Cambridge University Press:  03 September 2012

J.P. Deville ,
A. Barbier ,
C. Boeglin  and
B. Carriere
J.P. Deville
Affiliation:
I.P.C.M.S. Groupe “Surfaces-Interfaces” - UMR 046 du CNRS 4, rue Blaise Pascal, F-67070 STRASBOURG Cedex, France
A. Barbier
Affiliation:
I.P.C.M.S. Groupe “Surfaces-Interfaces” - UMR 046 du CNRS 4, rue Blaise Pascal, F-67070 STRASBOURG Cedex, France
C. Boeglin
Affiliation:
I.P.C.M.S. Groupe “Surfaces-Interfaces” - UMR 046 du CNRS 4, rue Blaise Pascal, F-67070 STRASBOURG Cedex, France
B. Carriere
Affiliation:
I.P.C.M.S. Groupe “Surfaces-Interfaces” - UMR 046 du CNRS 4, rue Blaise Pascal, F-67070 STRASBOURG Cedex, France
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Abstract

Cobalt-platinum alloys and multilayers are now well known for their potentialities in Magneto-optical recording Media. The growth of ultrathin layers and sandwiches is thought to be useful to find the relationship between the structural and magnetic properties at an atomic level. Low Energy Electron Diffraction (LEED) and Auger spectroscopy (AES) are used here to study the crystallography and the growth modes of Pt on Co (0001) surfaces. Co/Pt/Co sandwiches are also built and investigated by the same Methods. At room temperature we show the evidence of a good epitaxy of platinum on the Co (0001) surface leading to the possibility of obtaining ordered Co/Pt/Co sandwiches. Annealings at moderate temperatures lead to an epitaxial alloy formation. Auger results show that alloying indeed induces a magnetic moment on platinum atoms. This could explain the magnetic properties already observed in CO/Pt (111) Multilayers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 519
Copyright
Copyright © Materials Research Society 1993

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References

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