Open AccessEffect of DC bias on pressure-induced depolarization of Pb（Nb,Zr,Sn,Ti）O3 ceramics
Author(s) -
Dai Hua,
Xi Yao,
Chao Wang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3520
Subject(s) - antiferroelectricity , materials science , ferroelectricity , ceramic , metastability , condensed matter physics , polarization (electrochemistry) , dielectric , composite material , optoelectronics , physics , chemistry , quantum mechanics
The polarization and depolarization of antiferroelectric PbNb,Zr,Sn,TiO3 ceramics under dc bias were studied under hydraulic pressure ranging from zero to 250 MPa. It was found that the antiferroelectric ceramic can be induced to a metastable ferroelectric state and that the ceramic at this ferroelectric state can be switched to the antiferroelectric state by using hydraulic pressure. The hydraulic pressure that induces the transition from the ferroelectric to the antiferroelectric states increases with the positive and decreases with the negative dc bias. The electrical energy stored in the poled ceramics at its ferroelectric state releases during the transition from the ferroelectric to antiferroelectric state, which results in a strong current pulse a cross the ceramic. Based on the results, the pressure-electric field phase diagram for polarized PNZST ceramics was established.