In the present work, composition dependent crystal structure, ferroelectric, piezoelectric, and temperature dependent dielectric properties of the BiGaO₃-modified (1–x)(0.65Bi_1.05FeO₃–0.35BaTiO₃) (BFBT35–xBG, where x = 0.00–0.03) lead-free ceramics were systematically investigated by solid-state reaction method, followed by water quenching process. The substitution of BG successfully diffuses into the lattice of the BFBT ceramics, without changing the pseudo-cubic structure of the samples. The scanning electron microscopy (SEM) results revealed that the average grain size was increased with BG-content in BFBT system. The BFBT–xBG ceramics showed a maximum in permittivity (ɛ_max) at temperatures (T_max) above 500 °C in the compositional range of 0.00 ≤ x ≤ 0.03. The electro-strain is measured to be 0.125% (d^*₃₃ ~ 250 pm/V) under unipolar fields (5 kV/mm) for BFBT–0.01BG ceramics. The same composition (x = 0.01), large static piezoelectric constant (d₃₃ ~ 165 pC/N) and electromechanical coupling factor (k_p ~ 25%) were obtained. The above investigated characterizations suggests that BFBT–BG material is favorable for piezoelectric and high temperature applications.

在当前的工作中，BiGaO ₃改性的（1- x）（0.65Bi _1.05 FeO ₃ –0.35BaTiO ₃）（BFBT35- x BG ）的成分依赖的晶体结构，铁电，压电和温度依赖的介电性能（x  = 0.00-0.03）通过固态反应方法，然后进行水淬工艺对无铅陶瓷进行了系统的研究。BG的取代成功地扩散到了BFBT陶瓷的晶格中，而没有改变样品的伪立方结构。扫描电子显微镜（SEM）结果表明，BFBT体系中平均晶粒尺寸随BG含量的增加而增加。BFBT – xBG陶瓷显示出介电常数（ɛ最大值_最大值）在温度（Ť_最大值高于500℃）中的0.00≤组成范围 X  ≤0.03。电应变被测量为0.125％（d ^* ₃₃下单极字段（5千伏/毫米），用于BFBT-0.01BG陶瓷〜250点/ V）。相同的组成（X  = 0.01），大的静态压电常数（d ₃₃〜165 PC / N）和机电耦合系数（ķ _p得到〜25％）。上述研究表明，BFBT-BG材料非常适合压电和高温应用。