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Nondestructively measuring the remanent polarization of PZT 95/5 ceramics at room temperature
Author(s) -
Xu Chenhong,
Cao Fei,
Chen Xuefeng,
Yan Shiguang,
Nie Hengchang,
Dong Xianlin,
Wang Genshui
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.14873
Subject(s) - pyroelectricity , materials science , ceramic , dielectric , polarization (electrochemistry) , ferroelectricity , curie temperature , composite material , mineralogy , analytical chemistry (journal) , condensed matter physics , optoelectronics , chemistry , physics , ferromagnetism , chromatography
PZT 95/5 ferroelectric ceramics are widely utilized in pulsed power devices and the remanent polarization P r of poled PZT 95/5 can characterize the shock‐driven energy density. However, this remanent polarization is difficult to be measured nondestructively. In this article, a series of pyroelectric tests of poled PZT 95/5 ceramics were conducted near room temperature, from 25°C to 20°C. A linear relation between P r and pyroelectric coefficient p was found, that is, P r =1190.5( K )× p , which provides an effective way to nondestructively estimate the value of P r of the poled PZT 95/5 ceramics by measuring the pyroelectric coefficient p at room temperature. According to Devonshire's phenomenological theory, this result could be explained by a modified equation:p ε r = α P r C , where ɛ r represents the relative dielectric constant, C represents the Curie constant, and α (equals to 0.52 for PZT 95/5 ceramics) represents a modification factor for ceramics, respectively.