Molecular Beam Epitaxy: A Thermomechanical Treatment
Korchagin, Vladimir A.
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https://hdl.handle.net/2142/87723
Description
Title
Molecular Beam Epitaxy: A Thermomechanical Treatment
Author(s)
Korchagin, Vladimir A.
Issue Date
2004
Doctoral Committee Chair(s)
Eliot Fried
Department of Study
Theoretical and Applied Mechanics
Discipline
Theoretical and Applied Mechanics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
We perform a linear stability analysis, and consider the dependence of the growth rate of instability on the wave number. This dispersion relation is a function of many parameters that describe the elasticity and chemistry of the film and substrate. The analysis permits us to recover the classical results for Asaro-Tiller-Grinfeld instability, as well as more recent achievements predicting compositional segregation. Finally, we investigate the response of the instability towards a new chemical parameter (ratio of chemical energies of the species), and show that, under certain conditions, the instability behavior is determined by this parameter.
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