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Effect of Orientation and Microstructure on the Magnetic Anisotropy of Co/Pd Multilayers

Published online by Cambridge University Press:  03 September 2012

Frits J. A. den Broeder ,
Dick Kuiper  and
Willem Hoving
Frits J. A. den Broeder
Affiliation:
Philips Research Laboratories, 5600 JA Eindhoven, The Netherlands
Dick Kuiper
Affiliation:
Philips Research Laboratories, 5600 JA Eindhoven, The Netherlands
Willem Hoving
Affiliation:
Philips Research Laboratories, 5600 JA Eindhoven, The Netherlands
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Abstract

Co/Pd multilayers containing one to eight atomic layers of cobalt and ten atomic layers of palladium per modulation period were prepared in two orienotarteiottnoss, [111]fcc and [001]fcc. The [111] films were polycrystalline, the [001] films were epitaxial.

In this paper we compare the magnetic anisotropy of both types of films, which can be described by an interface anisotropy contribution favouring perpendicular magnetization and a volume contribution favouring in-plane magnetization. Depending on the deposition temperature, a perpendicular anisotropy for [111] films is found for up to about six atomic layers of Co. The [001] films however, show perpendicular anisotropy only for Co monolayers or Co bilayers. The large difference between the anisotropies in the two orientations is mainly caused by a strong in-plane anisotropy volume term which exists for [001] films, and which is attributed to the structural deformation of the Co layers from cubic to tetragonal. For both orientations a higher deposition temperature is found to lead to an increase of the interface anisotropy due to smoothing of the layers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 151: Symposium G – Growth, Characterization and Properties of Ultrathin Magnetic Films and Multilayers , 1989 , 105
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

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