Method and apparatus for forming and growing a single crystal of

Details Method and apparatus for forming and growing a single crystal of Method and apparatus for forming and growing a single crystal of

1981-01-05

1983-09-13

Bernstein, Hiram H.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

156DIG83, 156616R, C30B 2102

Patent

active

044041721

ABSTRACT:
An apparatus 10 for growing single crystal semiconductor compounds by the gradient freeze method includes means 40 for reducing radiant heat flow while enhancing axial heat flow in the region of a seed crystal 39 so as to give rise to an inverted solid-liquid interface shape 36 and a desired temperature profile.

REFERENCES:
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patent: 2768277 (1956-10-01), Buck et al.
patent: 3273969 (1966-09-01), Sirgo
patent: 3393054 (1968-07-01), Rupprecht et al.
patent: 3514265 (1970-05-01), Pastore
patent: 3759310 (1973-09-01), Barrow et al.
patent: 3857436 (1974-12-01), Petrov et al.
patent: 3972689 (1976-08-01), Knittel
patent: 4157373 (1979-06-01), Berkman et al.
patent: 4242307 (1980-12-01), Fally
Rao, "Preparation of Optical Grade Crystals", Indian J. of Phys., vol. 50, No. 2, Feb. 1976, pp. 378-383.

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