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Solving Interface Structures by Combined Electron Microscopy and X-Ray Diffraction

Published online by Cambridge University Press:  15 February 2011

A. Bourret  and
G. Feuillet
A. Bourret
Affiliation:
Département de Recherche Fondamentale sur la Matière CondenséeCentre d'Etudes Nucléaires de Grenoble - 85 X - 38041 GRENOBLE Cedex, FRANCE
G. Feuillet
Affiliation:
Département de Recherche Fondamentale sur la Matière CondenséeCentre d'Etudes Nucléaires de Grenoble - 85 X - 38041 GRENOBLE Cedex, FRANCE
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Abstract

By a combination of high resolution imaging (HREM) and grazing incidence X-ray scattering (GIXS), periodic interfaces with large unit cell can be solved at an atomic scale. The advantage of recording information in the real space is that phases are directly encoded in the image. On the other hand the X-ray diffraction gives quantitative information at a resolution level better than with HREM. This combined analysis is illustrated on GaAs (001)-CdTe (111) and on GaAs(001)-GaSb(001) interfaces. In both cases the structure at the interface is obtained and some mechanisms for the strain relaxation at heterostructures with large misfit are proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 295: Symposium W – Atomic-Scale Imaging of Surfaces and Interfaces , 1992 , 71
Copyright
Copyright © Materials Research Society 1993

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