OBTAINING BISMUTH FERRITE CERAMICS WITH HIGH CONTENT OF STOICHIOMETRIC COMPOSITION Russian patent published in 2024 - IPC C04B35/26 B82Y40/00 

FIELD: ceramics.

SUBSTANCE: invention discloses a method of producing ceramics based on bismuth ferrite with ferroelectromagnetic properties and a maximum fraction of the stoichiometric phase BiFeO₃ from degraded materials in form of powders after synthesis and ceramics after sintering, containing accompanying phases Bi₂₅FeO₃₉, Bi₂Fe₄O₉, resulting from decomposition of BiFeO₃. Method of producing stoichiometric bismuth ferrite ceramics involves mixing micropowder of said degraded materials with 50–60 wt.% of nanopowder with particle size ≤ 50 nm, obtained by burning organic nitrate precursors, pressing at a pressure greater than or equal to 100 MPa, heating the compact to temperature of 600 °C for 10 hours and sintering at this temperature for 60 minutes.

EFFECT: obtaining bismuth ferrite ceramics with high content of stoichiometric composition.

1 cl, 11 dwg, 1 tbl, 5 ex