极化子-缺陷复合体实现超高压电性

Liang Shu1†, Guyang Peng2†, Xiaoming Shi3, Yang Zhang4, Sixu Wang1, Haijun Wu2*, Qian Li1*, Hangren Li1, Xin Zhang1, Zhen Wang5, Huanhua Wang5, Yongbo Fan6, Chenguang Deng1, Yunpeng Ma1, Jiazhang Li7, Limin Guo7, Ke Bi7, Yue-Yu-Shan Cheng1, Ziqi Yang1, Yue-Yao Dai1, Liyu Wei1, Lei Zhao8, Lisha Liu9, Yi-Xuan Liu1, Kun Xu10*, Xiangdong Ding2, Jun Sun2, Shujun Zhang11, Houbing Huang12, Jing-Feng Li1,13* Materials capable of delivering giant and rapid piezoelectric responses at kilohertz frequencies are pivotal for advanced electromechanical technologies. However, their development has been constrained by a long-standing magnitude–speed trade-off: Ferroelectrics with intrinsic electric dipoles offer fast response but limited polarization, whereas ionic defect motion generates highly polarizable defect dipoles but responds slowly, limiting kilohertz-rate applications. …