MCT crystal growth

Details MCT crystal growth MCT crystal growth

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988alab.rept.....b&link_type=abstract

Final Report Alabama Univ., Huntsville. School of Mathematics and Natural Sciences.

Mathematics

Bridgman Method, Convection, Crystal Growth, Directional Solidification (Crystals), Models, Mercury Cadmium Tellurides, Temperature Distribution, Temperature Gradients, Thermal Expansion

Scientific paper

Convection and segregation in directional solidification and crystal growth by the Bridgman-Stockbarger technique are traditionally treated by assuming axisymmetric thermal condition on the ampoule wall. It is, however, difficult to achieve such a condition in an experimental setup. Any deviation from an axisymmetric temperature field on the wall of a vertical ampoule represents a horizontal temperature gradient. The horizontal density gradient that results from thermal expansion in the melt under this condition must lead on earth to some buoyance-driven convection, no matter what the axial (vertical) temperature distribution that is imposed on the melt. The magnitude of such convective flows for conditions representative of the MSFC mercury-cadmium-telluride (MCT) Bridgman setup is studied.

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