Zhu Li-Feng, Liu Qing, Zhang Bo-Ping, Cen Zhen-Yong, Wang Ke, Li Jun-Jie, Bai Yang, Wang Xiao-Hui, Li Jing-Feng
School of Materials Science and Engineering, University of Science and Technology Beijing Beijing 100083 China
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University Beijing 100084 China
RSC Adv. 2018 Oct 19;8(62):35794-35801. doi: 10.1039/c8ra07553k. eCollection 2018 Oct 15.
The temperature-dependence behaviors of ferroelectric, piezoelectric, and electrical-field-induced strain were carefully evaluated for high-performance BiFeO-0.3BaTiO (BF-0.3BT) ceramics. There results indicate, combined with Rayleigh analysis and temperature-dependence XRD and PFM, that the increase of strain and large signal with increasing the temperature from room temperature to 180 °C is related to the joint effect of intrinsic contribution (lattice expansion) and extrinsic contribution (domain switching). With further increasing the temperature to 300 °C, the large signal and electrical-field-induced strain mildly decrease because of the increase of conductivity for BF-0.3BT ceramics. However, different from strain and large signal the small signal (E) and exhibit excellent temperature stability behavior as the temperature increases from room temperature to 300 °C.
针对高性能BiFeO-0.3BaTiO（BF-0.3BT）陶瓷，仔细评估了铁电、压电和电场诱导应变的温度依赖性行为。结果表明，结合瑞利分析以及温度依赖性XRD和PFM，从室温到180°C温度升高时应变和大信号的增加与本征贡献（晶格膨胀）和非本征贡献（畴切换）的联合效应有关。随着温度进一步升高至300°C，由于BF-0.3BT陶瓷电导率的增加，大信号和电场诱导应变略有下降。然而，与应变和大信号不同，当温度从室温升高到300°C时，小信号（E）和表现出优异的温度稳定性行为。
