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Structural and Magnetic Properties of Epitaxial Co-Au Superlattices

Published online by Cambridge University Press:  03 September 2012

C. H. Lee ,
Hui He ,
F. Lamelas ,
W. Vavra ,
C. Uher  and
Roy Clarke
C. H. Lee
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
Hui He
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
F. Lamelas
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
W. Vavra
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
C. Uher
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
Roy Clarke
Affiliation:
Department of Physics, The University of Michigan, Ann Arbor, MI 48109
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Abstract

We describe measurements on the structural and magnetic properties of Co–Au superlattices grown on Ge–buffered (110) GaAs by molecular beam epitaxy. Samples have been prepared with Co layer thicknesses ranging from 5–40Å and Au spacer layers of constant thickness, ∼ 16Å. X–ray scattering and high-resolution transmission electron microscopy show that the hcp Co layers grow epitaxially with the (0001) axis parallel to (111)Au and with the in–plane Co[1120] axis parallel to GaAs[001]. SQUID magnetometer measurements reveal a crossover in the magnetic anisotropy of the as–grown samples such that the easy axis is perpendicular to the substrate plane when the Co layer thickness is less than ∼19Å.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 151: Sym,posium G – Growth, Characterization and Properties of Ultrathin Magnetic Films and Multilayers , 1989 , 111
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

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