Processing and Application of Ceramics (Jun 2022)

Effect of sintering temperatures on the magnetoelectric properties of Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3 ceramics

  • Ao Hong,
  • Wu Heng,
  • Li Wenchuan,
  • Lan Mengshuang,
  • Zeng Zhixin,
  • Zhang Qin,
  • Gao Rongli,
  • Deng Xiaoling,
  • Chen Gang,
  • Fu Chunlin,
  • Wang Zhenhua,
  • Lei Xiang,
  • Cai Wei

DOI
https://doi.org/10.2298/PAC2202089A
Journal volume & issue
Vol. 16, no. 2
pp. 89 – 96

Abstract

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Multiferroic materials attracted much attention because of magnetoelectric (ME) coupling effect. Herein, a typical single-phase multiferroic BiFeO3 (BFO) was co-doped at A and B sites by solid-state method, and Bi0.78La0.08Sm0.14Fe0.85Ti0.15O3 (BLSFTO) ceramics were prepared at different sintering temperatures (940, 960, 980 and, 1000°C). The effects of sintering temperature on the microstructure, morphology, dielectric, ferroelectric and magnetic properties were systematically studied. The remanent polarization (Pr) and coercive field (Ec) of the BLSFTO ceramics show a non-linear change with sintering temperature. The remanent polarization reaches maximum (0.0560 μC/cm2) in the sample sintered at 1000°C, whereas the maximum Ec of 1.32 kV/cm was obtained in the specimen sintered at 940°C. The remanent magnetization (Mr) increases with the increase of sintering temperature, while change of the saturation magnetization with sintering temperature is negligible. When BLSFTO specimen is sintered at 1000°C, Mr reaches the maximal value of 0.1344 emu/g.

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