Single-crystal – oriented-crystal – and epitaxy growth processes; – Processes of growth from liquid or supercritical state – Having pulling during growth
Patent
1995-05-23
1997-07-15
Breneman, R. Bruce
Single-crystal, oriented-crystal, and epitaxy growth processes;
Processes of growth from liquid or supercritical state
Having pulling during growth
117 12, 117208, C30B 1514
Patent
active
056479042
ABSTRACT:
A method and an apparatus for fabricating single crystals of superconducting ceramics are described. A powdered row oxide mixture is placed and molten in a melting pot. The surface of the molten mixture is approximately at the freezing point of the mixture. From the surface, a single crystal is pulled in accordance with the known pulling crystal technique. The pulled mixture is subjected to a magnetic field normal to the pulling direction. By virtue of the magnetic field, single crystal superconducing oxide ceramics can be obtained without twin crystals.
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"Single Crystal Growth of (La.sub.y-x A.sub.x).sub.2 CuO.sub.4 (A=Ba or Sr) And (Ba.sub.2 YCu.sub.3 O.sub.7-y ", Hidaka et al., Journal of Crystal Growth. 85 (1987) pp. 581-584.
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Breneman R. Bruce
Ferguson Jr. Gerald J.
Garrett Felisa
Semiconductor Energy Laboratory Co,. Ltd.
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