Simultaneous achievement of large strain, low hysteresis, and high-temperature stability in textured BT-based piezoelectric ceramics  

作　　者：Xiyue Zhang Zhe Wang Peng Li Yingchun Liu Juan Du Jigong Hao Wei Li Jiwei Zhai 

机构地区：[1]School of Materials Science and Engineering,Laboratory of Sensitive Materials and Devices Shandong Department of Education,Liaocheng University,Liaocheng 252059,China [2]Functional Materials and Acoustooptic Instruments Institute,Harbin Institute of Technology,Harbin 150080,China [3]School of Materials Science and Engineering,Tongji University,Shanghai 201804,China

出　　处：《Journal of Advanced Ceramics》2025年第2期131-139,共9页先进陶瓷(英文)

基　　金：supported by the National Natural Science Foundation of China(No.52102132);the Natural Science Foundation of Shandong Province of China(Nos.ZR2024ME201 and ZR2021ME085);the Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices(No.EFMD2023001M);the Natural Science Foundation of Heilongjiang Province(No.LH2022E049).

摘　　要：BaTiO_(3) (BT)-based piezoceramics with large temperature-stable strains and low hysteresis are urgently needed for high-precision actuators because of increasing environmental problems. Here, tetragonal [001]c-textured (Ba_(0.98)Ca_(0.02))(Ti_(0.96)Sn_(0.04))O_(3) (BCTS) ceramics with a texture degree (F_(001)) of ~98% were obtained via the templated grain growth (TGG) method. A large maximum unipolar strain (S_(max)) of ~0.24% with a low strain hysteresis (Hs) of ~3.8% and an optimized piezoelectric strain coefficient (d_(33)^(*)) of ~1124 pm·V^(−1) are simultaneously achieved in the textured BCTS ceramics. Moreover, the variation in the strain response is less than 20% from room temperature (RT) to 100℃ for the textured ceramics. The underlying mechanism for the optimized strain performance could be attributed to the synergetic effect of the polarization extension and a fine domain structure. This work provides new insight for achieving a balance of multiple strain properties (large strain, low hysteresis, and high-temperature stability) in BT-based ceramics, showing the widespread application prospects of lead-free ceramics in high-precision actuators.

关 键 词：textured ceramics strain performance HYSTERESIS temperature stability 

分 类 号：TQ174.1[化学工程—陶瓷工业] TQ174[化学工程—硅酸盐工业]