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Self-Limiting Growth Kinetics of 3D Coherent Islands

Published online by Cambridge University Press:  21 February 2011

K. M. Chen ,
D. E. Jesson ,
S. J. Pennycook ,
T. Thundat  and
R. J. Warmack
K. M. Chen
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6031;
D. E. Jesson
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6031;
S. J. Pennycook
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6031;
T. Thundat
Affiliation:
Health Sciences Research Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
R. J. Warmack
Affiliation:
Health Sciences Research Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
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Abstract

Large 3D coherent islands are found to kinetically resist their further growth during post-deposition annealing of metastable 2D strained films. We reveal that a kinetic energy barrier exists to successive facet-layer growth of a 3D strained island at the expense of its surrounding 2D structure. The barrier increases with further growth of the island, which defines a self-limiting behavior of island growth. This self-limiting effect naturally explains a number of relevant features which have been observed experimentally including narrow island size distributions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 399: Symposium D – Evolution of Epitaxial Structure and Morphology , 1995 , 271
Copyright
Copyright © Materials Research Society 1996

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References

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