The enhancement of piezoelectricity is usually in sacrifice of Curie temperature, which in turn limits its working temperature range. It is well known that there are some trade-off among the various performance parameters of most piezoelectric ceramics, and it is still difficult to achieve synergistic improvement in multiple parameters. Here, it is reported that the piezoelectric coefficient d₃₃ of a 0.6 mol% Mn-doped Pb(Sb_0.5Nb_0.5)_0.02Zr_0.51Ti_0.47O₃ piezoelectric ceramics is increased to 436 pC N⁻¹, and its electro-strain can reach 0.16% (d₃₃* = 800 pm/V) at 2 kV mm^− 1 by high-temperature poling, whose Curie temperature can still keep at 347 ℃. The features of "hard" piezoelectric ceramics such as low dielectric loss (tgδ = 0.23%) and high mechanical quality factor (Q_m = 546) are also preserved. Through structural characterization, combined with the theoretical results of phase field simulation, it is shown that its excellent piezoelectric performance originates from the highly oriented domain structure and small domain size after high temperature poling. On the other hand, the valence state transition of Mn³⁺ ions during high-temperature poling increases the defect vacancies and lattice distortion in ceramics, which keeps the acceptor-doped characteristic of the ceramics.

压电性的增强通常是以牺牲居里温度为代价的，从而限制了其工作温度范围。众所周知，大多数压电陶瓷的各项性能参数之间存在着一定的权衡取舍，实现多个参数的协同提升仍然困难重重。在此，据报道，0.6 mol% Mn 掺杂的 Pb(Sb _0.5 Nb _0.5 ) _0.02 Zr _0.51 Ti _0.47 O _{3压电陶瓷的压电系数 d 33}增加到 436 pC N ^-1，其电应变可以在 2 kV mm ^{− 1}时达到 0.16% ( d ₃₃ * = 800 pm/V)经高温极化，其居里温度仍能保持在347℃。“硬”压电陶瓷的低介电损耗 (tg δ  = 0.23%) 和高机械品质因数 ( Q _m = 546) 等特性也得以保留。通过结构表征，结合相场模拟的理论结果表明，其优异的压电性能源于高温极化后高度取向的畴结构和小的畴尺寸。另一方面，高温极化过程中Mn ^{3+离子的价态跃迁增加了陶瓷中的缺陷空位和晶格畸变，从而保持了陶瓷的受主掺杂特性。}