Negligible-hysteresis piezoceramic achieved by multiphase assisting and domain configuration manipulating

作者：Rongchuan He, Huitao Guo, Zhaokai Yao, Fangping Wang, Qi Sun, Li Xu, Xiaoqiang Song, Rongshan Zhou, Qingquan Xiao, Zhang Li, Guifen Fan, Dawei Wang, Fangfang Zeng, Qibin Liu · 发表于：Journal of Advanced Ceramics · 年份：2025 · DOI：10.26599/jac.2025.9221160 · 被引用次数：10 · 研究领域：Piezoelectric Actuators and Control、Aeroelasticity and Vibration Control、Solidification and crystal growth phenomena

High-performance lead-free piezoelectric ceramics with knockdown strain hysteresis are key components in high-precision actuators. However, high strain hysteresis in BaTiO 3 -based ceramics will induce stability degradation, lifespan reduction, and inferior positioning accuracy. Therefore, in this work, (1- x )Ba(Sn 0.11 Ti 0.89 )O 3 - x SrTiO 3 -0.6%wt MnO 2 composition is elaborately designed to reduce strain hysteresis. And ultra-low strain hysteresis (4.8%) is achieved by adjusting phase structure and domain configuration. TEM results reveal that the composition possesses R-O-T-C four-phase, nano-domains, and active polar nano-regions (PNRs) coexistence, meanwhile, PFM results have unveiled that these active PNRs can speedily respond to applied electric field stimulus. These findings provide a feasible path to prepare the piezoelectric compositions with ultra-low strain hysteresis.