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Hrem Study of A Ceramic/Ceramic Interface: MgO/A12O3

Published online by Cambridge University Press:  25 February 2011

D. X. Li ,
P. Pirouz ,
A. H. Heuer ,
S. Yadavalli  and
C. P. Flynn
D. X. Li
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A
P. Pirouz
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A
A. H. Heuer
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A
S. Yadavalli
Affiliation:
Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, U.S.A
C. P. Flynn
Affiliation:
Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, U.S.A
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Abstract

MgO was deposited on different planes of sapphire substrates by Molecular Beam Epitaxy (MBE). Cross-sectional specimens from these systems were prepared and investigated by high resolution electron microscopy (HREM). Two different orientation relationships were obtained for MgO films deposited on the differently oriented sapphire substrate. Misfit dislocations at the interface in each case were analyzed. MgA12O4 (spinel) forms at the MgO/A12O3 interface by a solid state reaction under electron beam irradiation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 221: Symposium C – Heteroepitaxy of Dissimilar Materials , 1991 , 331
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

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