J. Mater. Sci. Technol. ›› 2025, Vol. 204: 10-17.DOI: 10.1016/j.jmst.2024.04.003

• Research Article • Previous Articles     Next Articles

Insights into the intelligent multi-field response of nonlinear permittivity in the canonical antiferroelectric ceramics

Yizheng Baoa,b, Xuefeng Chena,b, Kunjie Loua,c,d, Canyu Chea,c,d, Fei Caoa,b, Shiguang Yana,b, Genshui Wanga,b,c,d,*   

  1. aKey Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;
    bState Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    cSchool of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China;
    dCenter of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2024-01-15 Revised:2024-03-21 Accepted:2024-04-03 Published:2025-01-01 Online:2024-04-20
  • Contact: *E-mail address: genshuiwang@mail.sic.ac.cn (G. Wang).

Abstract: Due to the atomic-level centrosymmetric spontaneous polarization, antiferroelectric materials exhibit a sensitively nonlinear capacitive response to plural physic fields (mainly electric field and temperature) in a certain range, consequently leading to some superb material properties, e.g., ripple suppression, electrocaloric cooling, and dielectric energy storage. However, there are many cognitive blanks about how this exotic multi-field relation ε(EDC, T) is influenced and manipulated via microscopic structures in the antiferroelectrics. In this work, the classic antiferroelectric ceramics PLZT were selected to see this intelligent effect, based on a quad-parameterized ε(EDC) relation on the dependence of T. ε relations were studied under different material compositions, temperature, frequency, AC electric field, and DC electric field, revealing lattice/domain structure evolution and the underlying mechanism. The inherent phase stability, introduced random field, and hierarchical hysteresis states were found to co-dominate this multi-field nonlinear relation. This work would not only contribute to future progress in the current applications (ripple suppression/electrocaloric cooling/dielectric energy storage) but imply the possibility of co-sensing temperature and electric potential simply and smartly.

Key words: Antiferroelectric ceramic, Nonlinear permittivity, Positive bias-field permittivity, Multi-field response, Temperature-electric potential co-sensing