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Giant Electrostrictive Responses and Temperature Insensitive Strain in Barium Titanate‐Based Ceramics
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2018-05-16 , DOI: 10.1002/aelm.201800075
Yanli Huang 1 , Chunlin Zhao 1 , Jiagang Wu 1
Affiliation  

Here, a large electrostrictive response and temperature‐insensitive strain in BaTiO3 ceramics are realized by introducing (M0.5N0.5)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(Li0.5Ho0.5)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:

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。
更新日期:2018-05-16
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