Experimental determination and numerical modelling of solid–liquid interface shapes for vertical Bridgman grown GaSb crystals
作者： P. Boiton , N. Giacometti , J.L. Santailler , T. Duffar , J.P. Nabot
DOI: 10.1016/S0022-0248(98)00617-4
关键词: Micro-pulling-down 、 Composite material 、 Mineralogy 、 Antimonide 、 Resistive touchscreen 、 Heat transfer 、 Curvature 、 Crucible 、 Chemistry 、 Finite element method 、 Isotropic etching 、 Inorganic chemistry 、 Materials Chemistry 、 Condensed matter physics
摘要: Abstract A facility, based on a profiled resistive heater, has been designed for the growth of antimonide crystals (GaSb, InSb) by vertical Bridgman method. Solid–liquid interface shapes during 2-in diameter are marked means variations pulling rate and revealed chemical etching. The comparison with calculated shapes, obtained using finite element method, gives satisfactory agreement. It is shown that heat transfer consequently greatly influenced crucible assembly. For example, small spacings around or slots in holder can change curvature from convex to concave. From numerical simulations it also convection melt flattens but an increase reverse effect.
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