Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/62670
Título: | Enhancing the dielectric relaxor behavior and energy storage properties of 0.6Ba(Zr0.2Ti0.8)O3–0.4(Ba0.7Ca0.3)TiO3 ceramics through the incorporation of paraelectric SrTiO3 |
Autor(es): | Jayakrishnan, A. R. Alex, Kevin V. Kamakshi, K. Silva, J. P. B. Sekhar, K. C. Gomes, M. J. M. |
Data: | 2019 |
Editora: | Springer |
Revista: | Journal of Materials Science: Materials in Electronics |
Resumo(s): | Recently, relaxor ferroelectric materials have been attracting considerable attention as energy storage capacitors due to their potential applications in pulsed power systems. In this work, lead-free (1−x)[0.6Ba(Zr0.2Ti0.8)O3–0.4(Ba0.7Ca0.3)TiO3]–xSrTiO3 [(1−x)BZCT–xSTO] relaxor ceramics have been synthesized and their relaxor behavior is modulated via STO doping content. The incorporation of STO weakens the ferroelectric long-range order in BZCT, which favors the relaxor behavior, as experimentally proved by temperature dependent dielectric spectroscopy and polarization–electric field studies. The compositional dependence of energy storage properties in (1−x)BZCT–xSTO ceramics gave the optimum value at x = 0.15. Further, 0.85BZCT–0.15STO ceramics show the highest energy storage performance with a recoverable energy density of 0.987 J/cm3, efficiency of 84%, and high power density of 1.93 × 105 W/cm3 at an electric field of 108 kV/cm. Our ceramics show superior performance compared to previously reported values in BZCT based lead-free ceramics. The results reported here demonstrate that (1−x) BZCT–xSTO ceramics are potential candidates for energy storage capacitor applications. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/62670 |
DOI: | 10.1007/s10854-019-02299-5 |
ISSN: | 0957-4522 |
e-ISSN: | 1573-482X |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FMNC - Artigos/Papers (with refereeing) |
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Enhancing the dielectric relaxor behavior and energy storage properties of 0.6Ba(Zr0.2Ti0.8)O3–0.4(Ba0.7Ca0.3)TiO3 ceramics through the incorporation of paraelectric SrTiO3.pdf Acesso restrito! | 2,43 MB | Adobe PDF | Ver/Abrir |