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Effect of Uniaxial Compressive Stress on Dielectric and Piezoelectric Responses in Lead Zirconate Titanate Based Ceramics
Author(s) -
Ochoa Diego A.,
García Jose E.,
Tamayo Idalberto,
Gomis Vicenç,
Damjanovic Dragan,
Perez Rafel
Publication year - 2012
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/j.1551-2916.2011.05048.x
Subject(s) - materials science , piezoelectricity , lead zirconate titanate , dielectric , composite material , stress (linguistics) , ceramic , piezoelectric coefficient , coalescence (physics) , zirconate , dielectric response , ferroelectricity , titanate , optoelectronics , linguistics , philosophy , physics , astrobiology
A uniaxial compressive stress significantly modifies the dielectric and piezoelectric response of Pb ( Zr,Ti ) O 3 ( PZT )‐based piezoceramics. In soft PZT , the pre‐stress decreases both the piezoelectric coefficient and its increment with increasing dynamical stress amplitude. However, an increase of both quantities is shown in hard PZT . Similar effects are observed in the dielectric response. It is proposed that the differences between such behaviors are due to the possibility of domain coalescence in the materials whose domain walls have high mobility. Furthermore, the enhancement of the response in hard PZT could be explained by change of the interaction energy between complex defects and domain walls induced by the compression.