Role of polarization evolution in the hysteresis effect of Pb-based antiferroelecrtics  

作　　者：Botao Gao He Qi Hui Liu Jun Chen 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,Department of Physical Chemistry,University of Science and Technology Beijing,Beijing 100083,China [2]Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China [3]Hainan University,Haikou 570228,China

出　　处：《Chinese Chemical Letters》2024年第4期516-519,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.22235002, 21825102 and 12004032);the Advanced Photon Source at Argonne National Laboratory was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No.DEAC02–06CH11357。

摘　　要：The electric field-induced irreversible domain wall motion results in a ferroelectric(FE) hysteresis. In antiferroelectrics(AFEs), the irreversible phase transition is the main reason for the hysteresis effects, which plays an important role in energy storage performance. Compared to the well-demonstrated FE hysteresis,the structural mechanism of the hysteresis in AFE is not well understood. In this work, the underlying correlation between structure and the hysteresis effect is unveiled in Pb(Zr,Sn,Ti)O_(3) AFE system by using in-situ electrical biasing synchrotron X-ray diffraction. It is found that the AFE with a canting dipole configuration, which shows a continuous polarization rotation under the electric field, tends to have a small hysteresis effect. It presents a negligible phase transition, a small axis ratio, and electric field-induced lattice changing, small domain switching. All these features together lead to a slim hysteresis loop and a high energy storage efficiency. These results offer a deep insight into the structure-hysteresis relationship of AFEs and are helpful for the design of energy storage material.

关 键 词：ANTIFERROELECTRIC Hysteresis effect Structure refinement PEROVSKITE In situ synchrotron radiation 

分 类 号：TB34[一般工业技术—材料科学与工程]