Abstract A series of (1– x )BaTiO 3 – x BiFeO 3 ( (1– x )BT– x BFO) multiferroic ceramics with the composition of x from 0 to 0.07 have been synthesized. The effects of the sintering temperature and composition on the crystal structure, microstructure, dielectric, ferroelectric, and magnetoelectric properties of the ceramics were investigated. With an increase of BFO content, the phase structure of the as prepared ceramics changed from tetragonal to cubic at a threshold value of x = 0.03. The region of the morphotropic phase boundary lies in the composition of x from 0.03 to 0.05, in which the tetragonal and cubic phase coexist. The dielectric constants have been greatly increased from 812 for pure BaTiO 3 to 2667 of the composition 0.96BT–0.04BFO at the 10 kHz, which have been improved about 328%. The ceramics with the composition of x = 0.04 exhibited excellent ferroelectric characteristics, in which the remnant polarization P r is 16.74 μC/cm 2 . The maximum magnetoelectric coefficient is 298.8 mV/cm Oe for the material with x = 0.04 at 900 kHz and 1 kOe.

中文翻译：

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烧结温度和成分对 BaTiO 3 –BiFeO 3 固溶体介电、铁电和磁电性能的影响

摘要 合成了一系列的(1– x )BaTiO 3 – x BiFeO 3 ( (1– x )BT– x BFO) 多铁性陶瓷，x 的组成为0 到0.07。研究了烧结温度和成分对陶瓷的晶体结构、微观结构、介电、铁电和磁电性能的影响。随着 BFO 含量的增加，所制备陶瓷的相结构在 x = 0.03 的阈值处从四方变为立方。同向相界的区域位于 x 0.03 到 0.05 的组成中，其中四方相和立方相共存。在 10 kHz 时，介电常数从纯 BaTiO 3 的 812 增加到 0.96BT–0.04BFO 的 2667，提高了约 328%。组成为 x = 0 的陶瓷。04表现出优异的铁电特性，其中剩余极化P r 为16.74μC/cm 2 。对于 x = 0.04 在 900 kHz 和 1 kOe 的材料，最大磁电系数为 298.8 mV/cm Oe。