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The Structure of Surface Steps on Low-Index Planes of Oxides.

Published online by Cambridge University Press:  28 February 2011

D.W. Susnitzky ,
Y. Kouh Simpson ,
B.C. De Cooman  and
C.B. Carter
D.W. Susnitzky
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853.
Y. Kouh Simpson
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853.
B.C. De Cooman
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853.
C.B. Carter
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853.
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Abstract

Surface steps have been observed on low-index planes of alpha-alumina and spinel. The steps were produced by annealing both bulk and perforated thin foil single crystals. A comparative study of bright-field TEM and dark-field REM of the same crystals makes it possible to construct models for the surface structure. Many faceted steps can be observed on the (0001), {0112}, {1010} and {1120} surfaces of alpha-alumina and on the {100} surface of spinel. A detailed study of step faceting and step facet movement during reheating is presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 60: Symposium L – Defect Properties and Processing of High-Technology Nonmetallic Materials , 1985 , 219
Copyright
Copyright © Materials Research Society 1986

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