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Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3–BaTiO3-based ceramics

Title
Less temperature-dependent high dielectric and energy-storage properties of eco-friendly BiFeO3–BaTiO3-based ceramics
Authors
Akram, FazliKim, JunchanKhan, Salman AliZeb, AurangYeo, Hong GooSung, Yeon SooSong, Tae KwonKim, Myong-HoLee, Soonil
Issue Date
2020-03
Citation
Journal of Alloys and Compounds, 818(25)
Type
Article
Article Type
Article
Author Keywords
BiFeO3 BaTiO3DielectricFerroelectricRelaxorEnergy storage
Keywords
STABLE RELATIVE PERMITTIVITYPIEZOELECTRIC PROPERTIESFERROELECTRIC PROPERTIESELECTROMECHANICAL PROPERTIESANTIFERROELECTRIC CERAMICSELECTRICAL-PROPERTIESTHERMAL-STABILITYRELAXOR BEHAVIORLARGE-STRAINDEGREES-C
ISSN
0925-8388
Abstract
The effects of eco-friendly (BiNa0.84K0.16)0.48Sr0.04TiO3 (BNKS)-content in 0.65Bi1.05FeO3–0.35BaTiO3 (BFBT) dielectrics were investigated by following simple solid state fabrication route. By the introduction of BNKS in BFBT matrix the average grain size was significantly reduced, with relatively high dense microstructure (relative density > 94%). The BNKS-modified BFBT dielectrics demonstrated thermally-stable εr (670–1005, from 30 °C to 500 °C), high Tmax (424 °C–465 °C), colossal εr-max (58880–69226), and εr-mid (2891–5652 ± 15%) across the broad range of temperature from 244 °C to 500 °C. At the optimum composition (x = 0.10) the temperature-dependent (30 °C–150 °C) substantially high energy-storage density (Wstore ∼ 0.81 J/cm3) and efficiency (η > 60%) in bulk ceramics were observed. The thermally-stable dielectric and energy storage properties suggest that present investigated dielectrics can be promising candidates for high temperature dielectric applications and power electronics. © 2019 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/11386
DOI
10.1016/j.jallcom.2019.152878
Publisher
Elsevier BV
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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