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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.

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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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