Open AccessDielectric behaviors and relaxor characteristics in Bi0.5Na0.5TiO3-BaTiO3 ceramics
Author(s) -
Pei Chen,
Jun Wang,
Weidong Zeng,
Changrong Zhou,
Yongsheng Zhang,
Qingning Li,
Jiwen Xu,
Guohua Chen,
Changlai Yuan
Publication year - 2019
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/s2010135x19500383
Subject(s) - dielectric , materials science , ceramic , condensed matter physics , hysteresis , relaxation (psychology) , dielectric dispersion , dielectric response , dispersion (optics) , atmospheric temperature range , microstructure , thermodynamics , permittivity , optics , composite material , physics , optoelectronics , psychology , social psychology
Microstructure and dielectric behaviors of heating/cooling and bias-field were investigated in lead-free ceramics ([Formula: see text])[Formula: see text][Formula: see text][Formula: see text]BaTiO 3 (BNT[Formula: see text]BT, [Formula: see text], 0.02, 0.04, 0.06, 0.08 and 0.10). The relaxor characters and the Vogel–Fulcher law of frequency-dependent dielectric properties were analyzed. Three dielectric anomalies with pronounced frequency dispersion at [Formula: see text], a maximum dielectric with variable frequency-dispersion at [Formula: see text] and a third Maxwell–Wagner-type relaxation over a wide temperature range in high-temperature region were observed. The significant dielectric thermal hysteresis, low barrier energy, high freezing temperature in heating process and the maximum dielectric tunability appeared in [Formula: see text] ceramic.