Abstract Ferroelectric phases coexistence or transition is an important strategy on generating high piezoelectricity. Here, the temperature-induced phase structural evolution correlated with small signal piezoelectric response d33, bias-field piezoelectric activity dmax33(E), unipolar and bipolar strain piezoelectric outputs d*33 in Ba(Ti0.92Sn0.08)O3 (BTS0.08) ceramic was investigated in details. Temperature-driven successive phase transitions from rhombohedral (R) to orthorhombic (O), tetragonal (T), finally to cubic (C) phases took place around 14 °C, 38 °C and 61 °C, respectively. The highest d33 value of 675 pC/N is achieved in the T-C phase transition. However, the O-T phase boundary gives the highest dmax33 = 1170 p.m./V, bipolar d*33 = 822 pm/V and unipolar d*33 = 1318 pm/V. The temperature-driven phase transition exhibits large enhancements in piezoelectric property comparable to that of composition-induced phase boundary. These features suggest an effective method to design high-performance piezoelectrics by tailoring the types of phase boundary.

中文翻译：

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Ba(Ti0.92Sn0.08)O3无铅陶瓷中温度驱动的相变和增强的压电响应

摘要 铁电相共存或相变是产生高压电的重要策略。此处，温度诱导的相结构演化与 Ba(Ti0.92Sn0.08)O3 (BTS0.08) 中的小信号压电响应 d33、偏置场压电活动 dmax33(E)、单极和双极应变压电输出 d*33 相关) 陶瓷进行了详细研究。从菱形 (R) 到正交 (O)、四方 (T)，最后到立方 (C) 相的温度驱动连续相变分别发生在 14 °C、38 °C 和 61 °C 左右。在 TC 相变中实现了 675 pC/N 的最高 d33 值。然而，OT 相界给出最高 dmax33 = 1170 pm/V，双极 d*33 = 822 pm/V 和单极 d*33 = 1318 pm/V。温度驱动的相变表现出与成分诱导相界相当的压电性能的大幅增强。这些特征提出了一种通过调整相界类型来设计高性能压电材料的有效方法。