SYNTHESIS METHOD OF SINGLE CRYSTAL OF ARTIFICIAL BERYL

Japanese Patent JPS6081099

A

PURPOSE:To synthesize single crystal of beryl of high quality economically with high efficiency by controlling the speed of crystal growth. CONSTITUTION:One or >= two kinds among lithium molybdate, molybdenum trioxide, lithium hydroxide, and vanadium pentoxide as flux material are added to a starting material consisting of beryllium oxide, aluminum oxide, and SiO2 having a compositional ratio corresponding to beryl to synthesize single crystal of beryl by forming molten salt by heating the mixture to above the melting temp. of the flux. In this case, one or >= two kinds of the starting materials are sintered or vitrified previously and charged to a vessel separated into three chambers with baffle plates to produce temp. difference in the molten salt prepd. by mixing two kinds (i.e. lithium hydroxide and vanadium pentoxide) in the powder state, synthesizing single crystal of beryl by controlling the speed of the crystal growth.

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KASUGA YOSHIHARU
ATOMACHI TADAAKI
TOGAWA EIJI
MORITA YOSHIO
TAKEUCHI MASAAKI

JP19023483A

May 09, 1985

October 12, 1983

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SUWA SEIKOSHA KK

C30B9/00; C30B29/34; (IPC1-7): C30B9/12; C30B29/34

JPS59111992A

1984-06-28

Kisaburo Suzuki (1 outside)

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