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Three-Dimensional Numerical Simulation of Interacting Dislocations in a Strained Epitaxial Surface Layer

Published online by Cambridge University Press:  10 February 2011

R. V. Kuktat  and
L. B. Freundt
R. V. Kuktat
Affiliation:
Div. of Engineering and Appl. Science, California Inst. of Tech., Pasadena, CA 91125
L. B. Freundt
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
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Abstract

In the context of elastic dislocation theory, the glide of arbitrarily shaped dislocations near a free surface is simulated numerically. The simulation is made possible by utilizing a compact line-integral representation of the elastic field produced by a piecewise planar dislocation loop near a free surface. The interaction between a threading dislocation and a misfit dislocation in its path is simulated and the blocking effect is shown to be much more significant than found in simulations which neglect free surface effects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 538: Symposium J – Multiscale Modelling of Materials , 1998 , 99
Copyright
Copyright © Materials Research Society 1999

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