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Ordering In Zn0.5Fe0.5Se Epilayers Grown on InP Substrates by Molecular Beam Epitaxy

Published online by Cambridge University Press:  26 February 2011

L. Salamanca Riba ,
K. Park  and
B. T. Jonker
L. Salamanca Riba
Affiliation:
Department of Materials and Nuclear Engineering, University of Maryland, College Park, MD 20742–2115
K. Park
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

We have observed an ordered structure in Zn0.5Fe0.5Se epilayers grown on (001) InP substrates using transmission electron microscopy. The ordered structure of Zn0.5Fe0.5Se has Fe atoms occupying the (0,0,0) and (½, ½, 0) sites and Zn atoms occupying the (0, ½, ½) and (½, 0, ½) sites in the zinc-blende unit cell. Ordering is observed in both electron diffraction patterns and cross-sectional high-resolution lattice images along the < 100 > and < 110 > directions. This ordered structure consists of alternating ZnSe and FeSe monolayers along the < 100 > and < 110 > directions. Computer image simulations of the high-resolution images under various thicknesses, and defocusing conditions have been obtained and are compared with those obtained experimentally.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 347
Copyright
Copyright © Materials Research Society 1992

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