Open AccessThe effect of an AC electric field on the dielectric properties of Pb(Mg1/3Nb2/3)O3 ceramic
Author(s) -
E. C. Lima,
J. D. S. Guerra,
E. B. Araújo
Publication year - 2021
Publication title -
materials and devices
Language(s) - English
Resource type - Journals
ISSN - 2495-3911
DOI - 10.23647/ca.md20201706
Subject(s) - permittivity , dielectric , materials science , ceramic , electric field , relative permittivity , dispersion (optics) , vacuum permittivity , atmospheric temperature range , dielectric permittivity , dielectric loss , amplitude , condensed matter physics , composite material , optics , thermodynamics , physics , optoelectronics , quantum mechanics
The dynamic dielectric response of Pb(Mg1/3Nb2/3 )O3 ceramic was experimentally studied as a function of the EAC amplitude field. An increase in real dielectric permittivity was obtained by increasing the applied electrical field within the investigated temperature range for frequencies below 10 kHz. The temperature of maximum dielectric permittivity and freezing temperature decreased with an increase in E AC. Nonlinear permittivity was studied and found to behave similarly to freezing temperature. A statistical model was used to fit the dielectric dispersion of real dielectric permittivity with temperature and frequency. The results are discussed in terms of different factors’ contributions to dielectric permittivity under different EAC field conditions.