Abstract In this work, in order to develop piezoelectric ceramics sintered at low temperature with high piezoelectric d31 coefficient, Pb(Mg1/2W1/2)0.03(Ni1/3Nb2/3)0.09(Zr0.5Ti0.5)0.88O3 ceramics were fabricated as a function of the amount of Fe2O3 addition using a conventional mixed oxide method. The microstructure, dielectric and piezoelectric properties were systematically investigated as a function of amount of Fe2O3 addition. At the sintering temperature of 920 °C, the excellent values of density = 7.94 (g/cm3), piezoelectric coefficient (d31) = 246 pC/N, planar electromechanical coupling coefficient (kp) = 0.69, mechanical quality factor (Qm) = 213, dielectric constant (εr) = 2,682 and high Curie temperature =366 °C were obtained from the ceramics doped with 0.3 wt% Fe2O3, respectively.

中文翻译：

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Fe2O3 掺杂 PMW-PNN-PZT 陶瓷具有优异的压电性能和高 Tc

摘要 本工作为研制具有高压电 d31 系数的低温烧结压电陶瓷，制备了 Pb(Mg1/2W1/2)0.03(Ni1/3Nb2/3)0.09(Zr0.5Ti0.5)0.88O3 陶瓷。作为使用传统混合氧化物方法的 Fe2O3 添加量的函数。作为 Fe2O3 添加量的函数，系统地研究了微观结构、介电和压电性能。在920℃的烧结温度下，优异的密度值=7.94（g/cm3），压电系数（d31）=246pC/N，平面机电耦合系数（kp）=0.69，机械品质因数（Qm）= 213、介电常数 (εr) = 2,682 和高居里温度 = 366 °C 分别从掺杂 0.3 wt% Fe2O3 的陶瓷中获得。