Abstract

Temperature stability and electrical properties of the piezoelectric material are very important in piezoelectric transformers applications. In this study, it was investigated the temperature stability of PNW–PMN–PZT with CeO 2 additives and the variation of Zr/Ti ratio. Meanwhile, effects of CeO 2 additives and the variation of Zr/Ti ratio on the microstructure and electrical properties of PNW–PMN–PZT were investigated in detail. The results revealed that the optimized temperature stability of Δ f r / f r25 °C = 0.15%, Δ K p / K p25 °C = −0.86% and Δ Q m / Q m25 °C = −45.26% could be attained at x = 0.1 wt.% and Zr/Ti = 51/49. Moreover, optimized electrical properties were achieved: K p = 0.60, Q m = 1405, d 33 = 388 pC/N, ɛ r = 2140 and tan δ = 0.0059. The obtained temperature stabilities and electrical properties make this composition a good candidate for high power piezoelectric transformer applications.

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