METHOD OF PRODUCING BISMUTH FERRITE NANOPOWDER Russian patent published in 2018 - IPC C01G29/00 C04B35/26 B82Y30/00 B22F9/24 

FIELD: chemistry.

SUBSTANCE: invention relates to the production of a single-phase nanocrystalline bismuth ferrite powder BiFeO₃ with ferromagnetic properties. The method comprises mixing bismuth nitrates Bi (NO₃)₃, iron nitrates Fe (NO₃)₃, glycerol, and water to form a solution, evaporating the resulting solution to form a gel and heating it to the flash point to form a powder. Mentioned bismuth nitrates and iron nitrates are used in the calculated amount required for obtaining bismuth ferrite, and glycine - in the amount of 35-50% less than the estimated amount. Evaporation of the resulting solution and heating to the temperature of the gel formed are performed at continuous mixing, and powder produced after flash is heated to 350-400°C over a period of time up to 30 min.

EFFECT: obtaining a pure powder uniform in dispersion.

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