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Computer Simulation of Thermomigration Process

Published online by Cambridge University Press:  10 February 2011

V. Yu. Gershanov ,
S. I. Garmashov ,
A. R. Minyaev  and
A. V. Beletskaya
V. Yu. Gershanov
Affiliation:
Department of Physics, Rostov State University, 5 Zorge Str., Rostov on Don 344090, Russia, [email protected]
S. I. Garmashov
Affiliation:
Department of Physics, Rostov State University, 5 Zorge Str., Rostov on Don 344090, Russia
A. R. Minyaev
Affiliation:
Department of Physics, Rostov State University, 5 Zorge Str., Rostov on Don 344090, Russia
A. V. Beletskaya
Affiliation:
Department of Physics, Rostov State University, 5 Zorge Str., Rostov on Don 344090, Russia
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Abstract

Mathematical model of thermomigration of liquid inclusions through a crystal under stationary and non-stationary thermal conditions is presented. It is assumed that the mass-transfer is provided by diffusion only, the crystallization and dissolution processes are carried out in accordance with the diffuse interface mechanism for atomic-rough (non-singular) interfaces and screw-dislocation or two-dimension nucleation mechanisms for singular interfaces.

The package of computer programs based on this model enables simulation of the evolution of the cross-sectional shape of cylindrical liquid inclusions. It is possible to simulate the cases of various inclusion sizes, various relationship between the interface and volume mass-transfer restrictions, various liquid phase composition, thermal gradient under stationary and non-stationary thermal conditions as well. The main results of the simulation are presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 490: Symposium Q – Semiconductor Process & Device Performance Modeling , 1997 , 135
Copyright
Copyright © Materials Research Society 1998

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References

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