Abstract A new type of (0.67-x)BiFeO3-0.33BaTiO3-xSrZrO3 (x = 0.00, 0.02, 0.04, 0.06, 0.08 wt%, abbreviated as SZ100x) ternary lead-free relaxation ceramic was prepared by a conventional mixed-oxide sintering method. The surface texture, dielectric, impedance, electrical conductivity and piezoelectric were studied in detail. It was found that three kinds of compounds are completely dissolved into a single structure with a pseudo-cubic (Pc) phase. Besides, scanning electron microscopy figures indicated that proper doping can make the ceramic system more compact while excessive SrZrO3 content would cause abnormal growth of the grain. In addition, the analysis of dielectric temperature spectra shown that the dielectric peaks gradually widen with an increase in x and the x = 0.04 sample has the strongest relaxation characteristics. Importantly, doping of SrZrO3 can greatly improve the impendence and electrical insulation characteristics. Besides, high strain value of 0.24% with the normalized strain value of 400 pm/V was obtained at x = 0.04, which was related to the relaxation response of the polar nanoregion under electric field.

中文翻译：

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(0.67- x )BiFeO 3 -0.33BaTiO 3 - x SrZrO 3 陶瓷的介电、导电和压电性能

摘要 采用传统的混合氧化物烧结法制备了一种新型(0.67-x)BiFeO3-0.33BaTiO3-xSrZrO3 (x = 0.00, 0.02, 0.04, 0.06, 0.08 wt%, 简称SZ100x)三元无铅弛豫陶瓷。方法。详细研究了表面织构、介电、阻抗、电导率和压电。发现三种化合物完全溶解成具有拟立方（Pc）相的单一结构。此外，扫描电镜数据表明，适当的掺杂可以使陶瓷体系更加致密，而过多的 SrZrO3 含量会导致晶粒异常生长。此外，介电温度谱分析表明，随着 x 的增加，介电峰逐渐变宽，x = 0.04 的样品具有最强的弛豫特性。重要的，SrZrO3的掺杂可以大大提高阻抗和电绝缘特性。此外，在 x = 0.04 处获得了 0.24% 的高应变值，归一化应变值为 400 pm/V，这与极性纳米区域在电场下的弛豫响应有关。