Here, a large electrostrictive response and temperature‐insensitive strain in BaTiO₃ ceramics are realized by introducing (M_0.5N_0.5)TiO₃ (M = K/Na/Li, N = rare earth elements). Temperature (25–130 °C) insensitivity of the giant electrostrictive coefficient (Q ₃₃ = 0.05–0.07 m⁴ C⁻²) is observed in BT‐(Li, Ho/Y/Yb)T ceramics, which is almost twice larger than those of other classical ferroelectric ceramics. In addition, the overall variation of the strain value in 0.95BaTiO₃–0.05(Li_0.5Ho_0.5)TiO₃ [BT‐(Li, Ho)T] ceramics is less than 5% in the temperature range of room temperature to 130 °C, which is obviously superior to the reported results. It is also found that the Curie temperature of this work can be increased up to 130–145 °C by optimizing the compositions. It is believed that the temperature‐insensitive strain and giant electrostrictive effect can promote the development of lead‐free BaTiO₃ ceramics.

中文翻译：

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钛酸钡基陶瓷的巨大电致伸缩响应和温度不敏感应变

在此，通过引入（M _0.5 N _0.5）TiO ₃（M = K / Na / Li，N =稀土元素）实现了BaTiO ₃陶瓷中的大电致伸缩响应和对温度不敏感的应变。在BT‐（Li，Ho / Y / Yb）T陶瓷中观察到巨大电致伸缩系数（Q ₃₃ = 0.05–0.07 m ⁴ C ^-2）的温度（25–130°C）不敏感，几乎是其两倍。其他经典铁电陶瓷的那些。此外，应变值在0.95BaTiO ₃ –0.05（Li _0.5 Ho _0.5）TiO _3中的整体变化 [BT-（Li，Ho）T]陶瓷在室温至130°C的温度范围内小于5％，明显优于所报道的结果。还发现通过优化成分，这项工作的居里温度可以提高到130–145°C。认为温度不敏感的应变和巨大的电致伸缩效应可以促进无铅BaTiO ₃陶瓷的发展。