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Effects of phase transition on discharge properties of PLZST antiferroelectric ceramics
Author(s) -
Xu Ran,
Tian Jingjing,
Zhu Qingshan,
Zhao Tian,
Feng Yujun,
Wei Xiaoyong,
Xu Zhuo
Publication year - 2017
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.14912
Subject(s) - antiferroelectricity , materials science , phase transition , amplitude , polarization (electrochemistry) , electric field , current density , analytical chemistry (journal) , capacitor , ceramic , phase (matter) , condensed matter physics , voltage , mineralogy , ferroelectricity , chemistry , composite material , electrical engineering , optoelectronics , optics , dielectric , physics , organic chemistry , engineering , chromatography , quantum mechanics
Abstract The effects of electric field‐induced phase transition on discharge properties of Pb 0.94 La 0.04 [(Zr 0.52 Sn 0.48 ) 0.84 Ti 0.16 ]O 3 antiferroelectric ( AFE ) ceramics were investigated. Due to the forward phase transition, high polarization and energy density are achieved. The backward phase transition results in nonlinear increase of current in underdamped circuit. The stored charge (14.2 μC under 40 kV/cm at 22°C) can be released completely in very short duration due to the low remanent polarization. With increasing temperature, the polarization and releasable energy decline. However, the current amplitude reaches maximum at 40°C, which is attributed to the backward phase transition. The maximum current and power density are as high as 143.8 A/cm 2 and 2.4 MW/cm 3 , which indicates the potential of the ceramics for pulsed capacitors.