High-energy storage and temperature stable dielectrics properties of lead-free BiScO(3)–BaTiO(3)–x(Bi(0.5)Na(0.5))TiO(3) ceramics
| Autor: | Hang Xie, Guobao Liu, Ling Yang, Jiwen Xu, Changrong Zhou, Haibo Zhang, Changlai Yuan, Guohua Chen, Wei Qiu, Hua Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
sodium compounds
barium compounds dielectric hysteresis dielectric polarisation solid solutions permittivity ferroelectric ceramics dielectric losses bismuth compounds materials preparation dielectric relaxation traditional ceramics preparation method high-energy storage density temperature stable dielectric properties dielectric spectrum curves perovskite solid solution microstructure hysteresis loops saturation polarisation remnant polarisation permittivities dielectric loss temperature coefficients impedance spectroscopy nonDebye relaxation mechanism high-temperature capacitor temperature 200 degC to 400 degC BiScO(3)-BaTiO(3)-(Bi(0.5)Na(0.5))TiO(3) Materials of engineering and construction. Mechanics of materials TA401-492 |
| Zdroj: | IET Nanodielectrics (2018) |
| Druh dokumentu: | article |
| ISSN: | 2514-3255 |
| DOI: | 10.1049/iet-nde.2018.0013 |
| Popis: | Lead-free (1–x)(0.4BiScO(3)–0.6BaTiO(3))-x(Bi(0.5)Na(0.5))TiO(3) (BSBT–xBNT) ceramics were prepared by traditional ceramics preparation method. The energy storage characteristics, as well as dielectric spectrum curves of BSBT–xBNT ceramics, were systematically used in research. The ternary system formed perovskite solid solution with dense and homogenous microstructure. BSBT–xBNT 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–xBNT ceramics had high permittivities, and a matching dielectric loss, which exhibited flat temperature coefficients of permittivity (TCɛ). The impedance spectroscopy analysis indicated that the non-Debye relaxation mechanism existed in BSBT–xBNT ceramics. BSBT–xBNT ceramics may have potential application value for the high-temperature capacitor. |
| Databáze: | Directory of Open Access Journals |
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