Study on the Structure and Phase Transition of Sm Substituted BiFeO3 Nanoparticles

Yu Xia Sun; Xing Wen Zhang; Hong Ri Liu

doi:10.4028/www.scientific.net/AMR.418-420.278

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Study on the Structure and Phase Transition of Sm...

Study on the Structure and Phase Transition of Sm Substituted BiFeO₃ Nanoparticles

Abstract:

Pure and Sm substituted BiFeO3 nanoparticles were prepared by a coprecipitate method using Bi(NO₃)₃•5H₂O and Fe(NO₃)•9H₂O as raw materials. X-ray diffraction pattern indicates that perovskite structural BiFeO₃ can be obtained using 0.02 molar precursor precipitate by annealing at 550 °C. A structural phase transition deduced by Sm substitution was observed. SEM results showed that the size of BiFeO3 increases with annealing temperature and substitution ratio. DTA results showed that the phase transformation temperature decreases with Sm substitution ratio.