Method of growing single crystal of .beta.-barium borate

Details Method of growing single crystal of .beta.-barium borate Method of growing single crystal of .beta.-barium borate

1993-06-18

1995-10-03

Kunemund, Robert

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

Processes of growth from liquid or supercritical state

Having pulling during growth

117 35, 117 36, 117944, C30B 2910

Patent

active

054543452

ABSTRACT:
In growing a single crystal of .beta.-BaB.sub.2 O.sub.4 from a melt of BaB.sub.2 O.sub.4 by the Czochralski method, crushed single crystal particles of either .beta.-BaB.sub.2 O.sub.4 or .alpha.-BaB.sub.2 O.sub.4 are used as the starting material of the melt. The primary advantage of using the crushed single crystal particles resides in that transformation of a polycrystal initially nucleated on a platinum rod, which is brought into contact with the melt in place of a seed crystal, to single crystal can be accomplished in a greatly shortened time. In consequnce, high quality single crystals are obtained at good yield.

REFERENCES:
Kouta et al. ".beta.-BaB.sub.2 O.sub.4 Single Crystal Growth by Czochralski Method", Journal of Crystal Growth, vol. 114 (1991) pp. 676-682.

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