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Structural Studies Of (ZnSe/FeSe) Superlattices By Transmission Electron Microscopy

Published online by Cambridge University Press:  25 February 2011

K. Park ,
L. Salamanca-Riba  and
B. T. Jonker
K. Park
Affiliation:
Department of Materials and Nuclear Engineering, University of Maryland, College Park, MD 20742–2115
L. Salamanca-Riba
Affiliation:
Department of Materials and Nuclear Engineering, University of Maryland, College Park, MD 20742–2115
B. T. Jonker
Affiliation:
Naval Research Laboratory, Washington, DC 20375–5000
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Abstract

The structural properties of (ZnSe/FeSe) superlattices, grown with and without a ZnSe buffer layer on (001) G a As substrates by molecular beam epitaxy, have been studied by transmission electron microscopy. High quality (ZnSe/FeSe) superlattices are obtained when grown on a ZnSe buffer layer on (001) GaAs substrates. In contrast, nominal (ZnSe/FeSe) superlattices grown directly on (001) GaAs substrates without a buffer layer showed evidence for intermixing of the layers in the superlattice indicating that the superlattice is unstable. We observed a disordered structure and an ordered structure in the resulting Zn1−xFexSe solid solution. The ordered structure corresponds to chemical ordering of Zn and Fe atoms along the < 100 > and < 110 > directions. We have studied the effect of misfit strain in the (ZnSe/FeSe) superlattices on the film quality.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 238: Symposium Cb – Structure and Properties of Interfaces in Materials , 1991 , 683
Copyright
Copyright © Materials Research Society 1992

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References

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