Abstract
Porous Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) ferroelectric ceramics were fabricated using a solid-state reaction consisting of BCZT and poly(methyl methacrylate)(PMMA) (2%, 4%, 8% and 10% by wt.%) as a pore former. By increasing the PMMA content from 0% to 10%, porosity increased from 8% to 29%. It was found that the dielectric constant (εr) decreased and the dielectric loss (tanδ) increased with increasing porosity. At 29% porosity, εr of the BCZT was found to decrease more, from 3481 to 1117 at 5 kHz and at room temperature. The dielectric constant and volume-specific heat capacity decreased with the increase in porosity which ultimately improved the pyroelectric figure-of-merits (FOMs). Further, the pyroelectric FOMs were estimated and found to be improved at optimum porosity.
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The authors would like to extend their sincere appreciation to the Deanship of Scientific Research at King Saud University for funding this research Group No. RG-1436-014.
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Sharma, M., Singh, V.P., Singh, S. et al. Porous Ba0.85Ca0.15Zr0.1Ti0.9O3 Ceramics for Pyroelectric Applications. J. Electron. Mater. 47, 4882–4891 (2018). https://doi.org/10.1007/s11664-018-6375-6
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DOI: https://doi.org/10.1007/s11664-018-6375-6