Effect of Zr/Ti ratio on microstructure and electrical properties of pyroelectric ceramics for energy harvesting applications

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Abstract

In this paper, Pb[(MnxNb1-x)1/2(MnxSb1-x)1/2]y(ZrzTi1-z)1-yO3 (lead magnesium niobate-lead antimony-manganese-lead zirconate titanate: PMnN-PMS-PZT) ceramics with three different Zi/Ti compositions of 95/5 (Zr95), 85/15 (Zr85) and (Zr85 + Zr95) were successfully fabricated and characterized. The effect of Zr/Ti ratio on the microstructure and electric properties were studied in detail. The pyroelectric coefficient of Zr95 ceramic was 5957 μC/m2K which was more than 2–3 times higher than other reported pyroelectric ceramics. The effect on pyroelectric energy harvesting was systemically investigated via a variation of Zr/Ti compositions in the ceramics, which was directly evaluated by the output power acquired from the data acquisition system. The output power was 25.7 μW, 4.8 μW and 14.2 μW at a composition ratio of Zr95, Zr85 and Zr85 + Zr95, respectively under identical conditions. Among the three Zi/Ti compositions, the best pyroelectric and ferroelectric properties were achieved with Zr95, which indicated that the pyroelectric energy harvesting can be efficiently optimized by the appropriate control of phase structure.

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Wang, Q., Zhang, X., Bowen, C. R., Li, M. Y., Ma, J., Qiu, S., … Jiang, S. (2017). Effect of Zr/Ti ratio on microstructure and electrical properties of pyroelectric ceramics for energy harvesting applications. Journal of Alloys and Compounds, 710, 869–874. https://doi.org/10.1016/j.jallcom.2017.03.236

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