METHOD OF OBTAINING A COMPLEX THULIUM AND IRON OXIDE TmFeO Russian patent published in 2018 - IPC C01F17/00 C01G49/00 C01G1/02 

FIELD: technological processes.

SUBSTANCE: invention relates to a technology for preparation of complex oxides and can be used to create multifunctional devices in microelectronics. Method for the preparation of complex thulium and iron oxide TmFe₂O_4±δ includes the preparation of a mixture of iron(III) and thulium(III) oxide and its heat-treatment. Original oxides are pre-dried at a temperature of 550 °C and mixed in a ratio of Fe₂O₃ : Tm₂O₃ = 1.00:0.47. Heat-treatment of the obtained mixture is carried out at temperature of 1,090 °C in a gas medium consisting of inert gas and oxygen, while maintaining preset oxygen pressure in the range of lgPo₂(atm)=(-12.3)÷(-13.1).

EFFECT: invention makes it possible to obtain single-phase thulium and iron oxide, to control oxygen non-stoichiometry of obtained a complex oxide.

1 cl, 3 dwg