Multiferroic properties of single-phase perovskite structure 0.8BiFeO3-0.2SrTiO3 ceramics synthesized using the Pechini method

作者：Qian, Guoyu; Zhu, Changming; Yin, Chongyang; Wang, Liguang; Wang, Yilun; Li, Canglong; Yuan, Songliu^*

来源：Journal of Electroceramics, 2018, 40(3): 190-196.

DOI：10.1007/s10832-018-0119-0

• BiFeO3
• Multiferroic
• Ceramics
• Pechini method
• Annealing

Single-phase perovskite structure 0.8BiFeO(3)-0.2SrTiO(3) ceramics were synthesized by a modified sol-gel method. According to the scanning electron microscopy results, the grain sizes of as-prepared samples increased obviously as the annealing temperature rose. Compared with pure BiFeO3, superior multiferroic and dielectric properties were obtained i.e. remnant magnetization M-r = 0.10 emu/g with a maximum magnetic field of 50 kOe and maximum polarization P-max = 8.738 mu C/cm(2) with an applied electric field of 50 kV/cm. Furthermore, the volcano-shape evolution of diffraction peaks and maximum magnetization with increasing sintering temperature indicate that appropriate annealing temperature has a remarkable influence on the enhancement of the multiferroic properties and dielectric performance of 0.8BiFeO(3)-0.2SrTiO(3) ceramics. The annealing temperature that yields the most favorable multiferroic properties for the 0.8BiFeO(3)-0.2SrTiO(3) solid solution ceramic is somewhere close to 1300 K.

• 出版日期2018-5
• 单位华中科技大学; 广西师范大学