HYDROTHERMAL METHOD FOR GROWING QUARTZ CRYSTALS Russian patent published in 2003 - IPC

Abstract RU 2213168 C1

FIELD: crystal growing. SUBSTANCE: invention provides method for growing monocrystals from aqueous solutions, which is industrially applicable in synthesis of optical and piezoelectric quartz monocrystals for radioelectronics, optoelectronics, and optics. More specifically, crystal are grown from sodium fluoride aqueous solution with concentration between 0.001 and 0.08 g/l, at temperature 320- 380 C and pressure 200 to 3000 kg/sq.cm, temperature gradient in solution ranging from 1.5 to 30 C thereby making unfavorable formation of colloidally sized macrocomplexes owing to high anticoagulation properties of sodium fluoride under hydrothermal conditions. EFFECT: improved optical and piezoelectric properties of quartz crystals due to reduced content of solid inclusions. 11 cl, 2 dwg, 2 ex

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RU 2 213 168 C1

Authors

Belimenko A.F.

Dubovik V.M.

Kolobov Ju.N.

Dates

2003-09-27—Published

2002-07-08—Filed