Affiliation:
1. School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China + Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing, China
Abstract
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 ?C/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.
Publisher
National Library of Serbia