Carbonate powder mixing calcination method for low-temperature synthesis of perovskite-type SmFeO3 fine powder

摘要

Perovskite-type SmFeO₃ fine powder was synthesized by the polymer precursor method using carbonate powder as an anti-sintering agent. SmFeO₃ particles synthesized at 550°C were smaller than 100 nm and had a specific surface are of 36 m2/g. Also, the addition of carbonate in the calcinations process enabled the synthesis temperature for crystal formation of SmFeO₃ to be reduced by 100°C. Results of thermal analysis suggested that carbonate stimulates a combustion reaction required for the formation of SmFeO₃.