Ferroelectric materials with the typical perovskite structure are widely used in capacitors, ultrasonic devices, oil drilling, transducers, and other fields. Lead-lanthanum-zirconium-titanate ceramics co-doped with Sn and Ba, have been widely investigated. However, there is little attention has been focused on the dielectric properties of barium-lanthanum-zirconium-titanate. Thus, in this work, Sn doped Ba_0.955La_0.03Zr_0.02Ti_0.98O₃ ferroelectric ceramics were prepared via a classical high-temperature solid state reaction. Scanning Electron Microscopy (SEM) was used to observe the surface appearance of ceramics. The X-ray diffraction (XRD) patterns at room temperature, indicate that the ceramics are well crystallized. Impedance properties and dielectric properties reflect the characteristic of typical high temperature dielectric relaxation behavior. The conductive activation energy and the relaxation activation energy are obtained through the calculation of the Arrhenius law. The fitting results show that the dielectric relaxation behavior at high-temperature, was related to the oxygen defect. The electrical modulus verified the partial short-range carrier migration, also contribute to the high-temperature dielectric properties.

具有典型钙钛矿结构的铁电材料广泛应用于电容器、超声波器件、石油钻井、换能器等领域。Sn和Ba共掺杂的铅-镧-锆-钛酸盐陶瓷已被广泛研究。然而，很少有人关注钡-镧-锆-钛酸盐的介电性能。因此，在这项工作中，Sn掺杂Ba _0.955 La _0.03 Zr _0.02 Ti _0.98 O ₃通过经典的高温固相反应制备铁电陶瓷。扫描电子显微镜（SEM）用于观察陶瓷的表面外观。室温下的 X 射线衍射 (XRD) 图案表明陶瓷结晶良好。阻抗特性和介电特性反映了典型的高温介电弛豫行为的特征。导电活化能和弛豫活化能通过阿伦尼乌斯定律的计算得到。拟合结果表明高温下的介电弛豫行为与氧缺陷有关。电模量验证了部分短程载流子迁移，也有助于高温介电性能。