Open AccessExploring the electromechanical response and electric field-induced dielectric anomalies in PMN–PT electroceramics
Author(s) -
José de los Santos Guerra,
C. A. Guarany,
E. C. Lima,
E. B. Araújo,
José E. García
Publication year - 2021
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x21400051
Subject(s) - dielectric , materials science , ferroelectricity , condensed matter physics , electric field , permittivity , phase transition , electroceramics , dielectric permittivity , ferroelectric ceramics , ceramic , phase (matter) , dielectric response , physics , composite material , optoelectronics , quantum mechanics , medicine , microfabrication , alternative medicine , pathology , fabrication
Electromechanical and dielectric properties of PMN–PT ferroelectric ceramics are investigated. In particular, dielectric response studies focus on the investigation of the influence of the DC applied electric field on the dielectric permittivity as a function of temperature and frequency. Results reveal an electric field driven dielectric anomaly in the dielectric permittivity curves, [Formula: see text], which in turn prevails in the whole ferroelectric phase region and continuously vanishes for temperatures near the paraelectric-ferroelectric phase transition temperature. A schematic model for the domains dynamics of the studied material is proposed taking into account the simultaneous contribution of both 90[Formula: see text] and 180[Formula: see text] domains walls.