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Hydrostatic‐pressure‐induced depolarization of (Pb 1‐1.5x La x )(Zr 0.80 Ti 0.20 )O 3 ferroelectric ceramics
Author(s) -
Xie Meng,
Bao Yizheng,
Li Song,
Nie Hengchang,
Wang Genshui,
Dong Xianlin
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17685
Subject(s) - materials science , ferroelectricity , hydrostatic pressure , analytical chemistry (journal) , depolarization , antiferroelectricity , dielectric , phase (matter) , phase transition , ceramic , thermal stability , condensed matter physics , thermodynamics , optoelectronics , composite material , chemistry , organic chemistry , chromatography , endocrinology , medicine , physics
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 (Pb 1‐1.5 x La x )(Zr 0.80 Ti 0.20 )O 3 (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(Zr 0.95 Ti 0.05 )O 3 materials, poor temperature stability negatively influences their application. The static charge densities of PLZT ( x = 0.04, 0.06) decreased from 29.11 μC/cm 2 and 31.53 μC/cm 2 to 19.76 μC/cm 2 and 6.56 μC/cm 2 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.