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Solidification of Highly Undercooled Silicon: Bulk Nucleation and Amorphous Phase Formation

Published online by Cambridge University Press:  22 February 2011

R. F. Wood ,
D. H. Lowndes  and
J. Narayan
R. F. Wood
Affiliation:
Solid State Division, Oak Ridge National Laboratory Oak Ridge, Tennessee 37830
D. H. Lowndes
Affiliation:
Solid State Division, Oak Ridge National Laboratory Oak Ridge, Tennessee 37830
J. Narayan
Affiliation:
Solid State Division, Oak Ridge National Laboratory Oak Ridge, Tennessee 37830
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Abstract

Recent experimental and theoretical work suggests that bulk nucleation occurs in highly undercooled liquid silicon formed by the pulsed laser melting of amorphous layers. In this paper we discuss the dynamics of solidification of undercooled liquid silicon in terms of results from melting model calculations and from the theory of homogeneous bulk nucleation. The relationship between the occurrence of bulk nucleation and the ability to induce a liquid-to-amorphous phase transition by large undercoolings of the liquid is considered. It is concluded that the observed liquid-toamorphous transition in silicon cannot be explained by an equilibrium thermodynamic approach.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 23 , 1983 , 141
Copyright
Copyright © Materials Research Society 1984

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Footnotes

*

Research sponsored by the Division of Materials Sciences, U.S. Department of Energy under contract W-7405-eng-26 with Union Carbide Corporation.

References

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