METHOD FOR PRODUCING BISMUTH GERMANATE BIGEO BY CASTING Russian patent published in 2021 - IPC C30B28/00 C30B29/32 C01G29/00 C01G17/00 

FIELD: material technology.

SUBSTANCE: invention relates to the technology of a material with high photoconductive and photorefractive properties. The method for obtaining bismuth germanate Bi₁₂GeO₂₀ includes preliminary mechanical mixing of the initial powders of bismuth oxide Bi₂O₃ and germanium oxide GeO₂, heating the resulting mixture in a platinum crucible to 1060-1160°C with holding in this temperature range for 15-60 minutes, after which the resulting melt is poured onto a platinum substrate.

EFFECT: pure bismuth germanate of the composition Bi₁₂GeO₂₀ is obtained, while this technology requires much less time for synthesis compared to the known ones, which significantly reduces not only time, but also economic costs. Moreover, the method makes it possible to obtain Bi₁₂GeO₂₀ by casting, which contributes to the economy of expensive crucibles used in the synthesis and destroyed during the extraction of the finished material.

1 cl, 5 dwg