DEVICE AND PROCESS FOR PRODUCING A BLOCK OF CRYSTALLINE MATERIAL
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United States of America Patent
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app pub date -
Feb 9, 2012
filing date -
Jan 4, 2006
priority date (Note) -
Abandoned
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Abstract
A temperature gradient is established in a crystallization crucible by means of a heat source and a cooling system. The cooling system comprises a heat exchanger and an adjustable additional heat source. The cooling system is preferably formed by an induction coil cooled by a coolant liquid circulating in the induction coil and by an electrically conductive induction susceptor positioned between the crucible and induction coil. The fabrication process comprises heating the crucible via the top and controlling heat extraction from the crucible downwards by means of the heat exchanger and by means of regulation of the adjustable additional heat source.
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