METHOD OF GROWING SODIUM-BISMUTH MOLYBDATE MONOCRYSTALS Russian patent published in 2015 - IPC C30B9/04 C30B9/12 C30B15/02 C30B15/36 C30B29/32 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of the chemical technology of growing sodium-bismuth molybdate NaBi(MoO₄)₂ crystals for the research of physical properties and practical application. The monocrystals NaBi(MoO₄)₂ are grown by crystallisation from a high-temperature solution in a charge melt, which contains sodium-bismuth molybdate and a solvent sodium dimolybdate in a ratio, equal to 10-30:90-70 mol% respectively, crystallisation is carried out on inoculum, oriented perpendicularly to dipyramide edges [101], with the inoculum revolving at a rate of 10-30 rev/min and a rate of extension of 1-5 mm/day, with constant cooling of the solution-melt at a rate of 0.5-15 degrees/day, with growing being carried out under conditions of low gradients ΔT/Δl lower than 1 degree/cm in the solution-melt.

EFFECT: method makes it possible to obtain colourless, stoichiometric in the structure, large (size 75×30 mm), optically homogenous NaBi(MoO₄)₂ crystals.

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