Method of drawing single crystals

Details Method of drawing single crystals Method of drawing single crystals

1999-03-08

2000-10-03

Hiteshew, Felisa

Single-crystal, oriented-crystal, and epitaxy growth processes;

Processes of growth from liquid or supercritical state

Having moving solid-liquid-solid region

117 40, 117 41, 117 44, C30B 1502

Patent

active

061267422

ABSTRACT:
In a method of drawing single crystals from a body of highly pure polycrystalline material molten by inductive heating, a solid body of the polycrystalline material is first heated by direct induction heating at a frequency >200 KHz to increase its conductivity and is then further heated by direct induction heating at a frequency <20 KHz to melt the center of the body of polycrystalline material to form a molten pool contained by a marginal solid zone of the polycrystalline material from which the single crystal is drawn.

REFERENCES:
patent: 4548670 (1985-10-01), Pinkhasov

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