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Elastic Softening in Nanocrystalline Silicon

Published online by Cambridge University Press:  22 February 2011

S. R. Phillpot ,
D. Wolf  and
J. F. Lutsko
S. R. Phillpot
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
D. Wolf
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
J. F. Lutsko
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

It is pointed out that some of the generic physical properties of a nanocrystalline material are similar to those of a grain-boundary superlattice. The structure and elastic properties of a superlattice of twist boundaries on the (110) plane of silicon are calculated as a function of modulation wavelength using a three-body potential. All elastic moduli are found to be softened. This softening is attributed to the relatively small amount of structural disorder at the interfaces.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 153: Symposium J – Interfaces Between Polymers, Metals, and Ceramics , 1989 , 33
Copyright
Copyright © Materials Research Society 1989

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