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Morphological Features of the Solid-Liquid Interface of a Gallium Film

Published online by Cambridge University Press:  21 February 2011

Richard D. Robinson
Affiliation:
Thermal Analysis of Materials Processing Laboratory, Mechanical Engineering Department, Tufts University, Med ford, MA 02155
Ioannis N. Miaoulis*
Affiliation:
Thermal Analysis of Materials Processing Laboratory, Mechanical Engineering Department, Tufts University, Med ford, MA 02155
*
* author to whom correspondence should be addressed
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Abstract

This paper presents a new experimental method to investigate solid-liquid interface morphologies during Zone-Melting-Recrystallization at lower than the typical processing temperatures. Gallium films were used as a substitute for silicon films. In situ preliminary investigation identified three phenomena typically occurring during ZMR of silicon films: a) Transition from planar to dendritic to cellular morphologies was observed for different processing conditions; b) cell period proved to be dependant on scanning velocity; c) instabilities at the solidification interface at low heating strip temperatures were caused by supercooling and optical property variations as the material changed phase.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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