BaZrO₃ doped (Na_0.52K_0.48)(Nb_0.95Sb_0.05)O₃ ceramics were prepared using solid state route. The optimization of processing parameters like calcination temperature (800 °C), sintering temperature (1140 °C) and poling parameters (3 kV/mm at 120 °C/60 min) was carried out on base composition. Optimized parameters yielded a piezoelectric charge coefficient of 171 pC/N in composition having 4 mol% BaZrO₃. Low temperature dielectric measurements and high temperature X-ray diffraction studies, along with structural refinement using Rietveld method were performed to ascertain the new found phenomenon. A castling-like phenomenon was observed in (1-x)(Na_0.52K_0.48)(Nb_0.95Sb_0.05)O₃ – xBaZO₃ (0.00 ≤ x ≤ 0.08) ceramics, where two phases interchanged their position. Also, BaZrO₃ led to negative ageing behavior in these ceramics. Doping of BaZrO₃ improved the electrical fatigue behavior and degraded the ferroelectric and thermal stability of ceramics.

中文翻译：

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BaZrO 3掺杂（Na 0.52 K 0.48）（Nb 0.95 Sb 0.05）O 3中的相铸：对电疲劳，老化和热稳定性的协同作用

采用固态法制备了掺杂BaZrO _3的（Na _0.52 K _0.48）（Nb _0.95 Sb _0.05）O ₃陶瓷。对基础组成进行了煅烧温度（800°C），烧结温度（1140°C）和极化参数（120°C / 60 min时3 kV / mm）等工艺参数的优化。优化的参数在具有4 mol％BaZrO _3的组合物中产生了171 pC / N的压电电荷系数。进行了低温介电测量和高温X射线衍射研究，以及使用Rietveld方法进行结构改进，以确定新发现的现象。在（1-x）（钠_0.52 ķ _0.48）（Nb的_0.95锑_0.05）O ₃ - X BAZO ₃（0.00≤  X  ≤0.08）陶瓷，其中两相互换它们的位置。另外，BaZrO ₃导致这些陶瓷的负老化行为。掺杂BaZrO ₃改善了电疲劳性能并降低了陶瓷的铁电和热稳定性。