In ferroelectric materials high electric field-induced strain (EFIS) with good thermal stability is of much interest from both fundamental research and potential applications. Here we propose a strategy to achieve high thermally stable EFIS based on electrostrictive effect and thermal stability of polarization. According to this strategy, we synthesized (1−x)(Bi_0.5Na_0.5)TiO₃-xBa_0.85Ca_0.15Ti_0.9Zr_0.1O₃ (BNT-xBCZT) ferroelectric ceramics in order to tailor the thermal stability of dielectric permittivity, polarization and EFIS. A dielectric platform with a wide temperature region is induced by increasing x from 0.24 to 0.36 gradually. From 30 °C to 150 °C, a variation of 20% polarization results in a change of 36% EFIS, suggesting a good thermal stability as expect. Temperature-insensitive electrostrictive coefficient Q₃₃ ranges from 0.0264 m⁴/C² to 0.0314 m⁴/C². These results not only prove the effectiveness of this strategy, but also suggest that this strategy can be applied to other ferroelectric materials to improve the thermal stability.

在铁电材料中，基础研究和潜在应用都对具有良好热稳定性的高电场感应应变（EFIS）感兴趣。在这里，我们提出一种基于电致伸缩效应和极化热稳定性来实现高热稳定性EFIS的策略。根据该策略，我们合成了（1- x）（Bi _0.5 Na _0.5）TiO ₃ - x Ba _0.85 Ca _0.15 Ti _0.9 Zr _0.1 O ₃（BNT- xBCZT）铁电陶瓷，以调整介电常数，极化和EFIS的热稳定性。通过将x从0.24逐渐增加到0.36，可以感应出具有宽温度范围的介电平台。从30°C到150°C，极化变化20％导致EFIS发生36％的变化，这表明了良好的热稳定性。对温度不敏感的电致伸缩系数Q ₃₃为0.0264m ⁴ / C ²至0.0314m ⁴ / C ²。这些结果不仅证明了该策略的有效性，而且表明该策略可以应用于其他铁电材料以提高热稳定性。