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Hydrostatic-pressure-induced depolarization of (Pb1-1.5xLax)(Zr0.80Ti0.20)O3 ferroelectric ceramics |
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| Authors: | Meng Xie Yizheng Bao Song Li Hengchang Nie Genshui Wang Xianlin Dong |
| Affiliation: | 1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People’s Republic of China;2. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People’s Republic of China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China;3. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People’s Republic of China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People’s Republic of China |
| Abstract: | Pulse power energy conversion materials with ultrafast discharge processes and ultrahigh power densities have been widely used in the defense, energy, medical, and mining fields. The pressure-driven depolarization in ferroelectric materials is significant and accounts for the discharge processes. In this study, we focus on pressure-induced depolarization in (Pb1-1.5xLax)(Zr0.80Ti0.20)O3 (PLZT) (x = 0-0.07) ceramics, and their corresponding phase structure, dielectric properties, ferroelectric properties, and thermal depolarization performances. Although a satisfactory pulse power energy conversion performance has been achieved in Pb(Zr0.95Ti0.05)O3 materials, poor temperature stability negatively influences their application. The static charge densities of PLZT (x = 0.04, 0.06) decreased from 29.11 μC/cm2 and 31.53 μC/cm2 to 19.76 μC/cm2 and 6.56 μC/cm2 under 400 MPa hydrostatic pressure, respectively, which is attributed to a pressure-driven ferroelectric-antiferroelectric phase structural transition. In particular, the temperature stability of PLZT (x = 0.06) materials is up to 87°C. This study may guide the further development pulse power energy conversion devices. |
| Keywords: | antiferroelectrics depolarization ferroelectrics pressure-induced phase transition pulse power energy |