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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.

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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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