Method for harvesting rare earth barium copper oxide single crys

Details Method for harvesting rare earth barium copper oxide single crys Method for harvesting rare earth barium copper oxide single crys

1995-01-12

1996-04-02

Kunemund, Robert

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With melting

505729, 117 75, 117 78, H01L 3912

Patent

active

055040608

ABSTRACT:
A method of preparing high temperature superconductor single crystals. The method of preparation involves preparing precursor materials of a particular composition, heating the precursor material to achieve a peritectic mixture of peritectic liquid and crystals of the high temperature superconductor, cooling the peritectic mixture to quench directly the mixture on a porous, wettable inert substrate to wick off the peritectic liquid, leaving single crystals of the high temperature superconductor on the porous substrate. Alternatively, the peritectic mixture can be cooled to a solid mass and reheated on a porous, inert substrate to melt the matrix of peritectic fluid while leaving the crystals melted, allowing the wicking away of the peritectic liquid.

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Pellerin et al, "Nucleation and Growth Mechanisms of Textured YBaCuO and the Influence of Y.sub.2 BaCuO.sub.5 ", Physica C vol. 222 (1994) pp. 133-148.

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