Open AccessHigh‐energy storage and temperature stable dielectrics properties of lead‐free BiScO 3 –BaTiO 3 – x (Bi 0.5 Na 0.5 )TiO 3 ceramics
Author(s) -
Xie Hang,
Liu Guobao,
Yang Ling,
Xu Jiwen,
Zhou Changrong,
Zhang Haibo,
Yuan Changlai,
Chen Guohua,
Qiu Wei,
Wang Hua
Publication year - 2018
Publication title -
iet nanodielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.23
H-Index - 9
ISSN - 2514-3255
DOI - 10.1049/iet-nde.2018.0013
Subject(s) - materials science , ceramic , dielectric , microstructure , dielectric loss , analytical chemistry (journal) , permittivity , hysteresis , perovskite (structure) , dielectric spectroscopy , mineralogy , composite material , condensed matter physics , crystallography , optoelectronics , chemistry , electrode , physics , chromatography , electrochemistry
Lead‐free (1– x )(0.4BiScO 3 –0.6BaTiO 3 )‐ x (Bi 0.5 Na 0.5 )TiO 3 (BSBT– x BNT) ceramics were prepared by traditional ceramics preparation method. The energy storage characteristics, as well as dielectric spectrum curves of BSBT– x BNT ceramics, were systematically used in research. The ternary system formed perovskite solid solution with dense and homogenous microstructure. BSBT– x BNT ceramics exhibited slimmer and slanted hysteresis loops followed by higher saturation polarisation ( P max ) and lower remnant polarisation ( P r ), which induced high‐energy storage density of 1.39 J/cm 3 ( E = 180 kV/cm). Ranging from 200 to 400°C, BSBT– x BNT ceramics had high permittivities, and a matching dielectric loss, which exhibited flat temperature coefficients of permittivity (TC ɛ ). The impedance spectroscopy analysis indicated that the non‐Debye relaxation mechanism existed in BSBT– x BNT ceramics. BSBT– x BNT ceramics may have potential application value for the high‐temperature capacitor.