Enhanced high-power performance of Fe-doped PZMNZT piezoelectric ceramics

High-power piezoelectric ceramics are typically driven to output vibration velocity (v(0)) under high AC electric fields. Herein, the Fe2O3 doped 0.125 Pb(Zn1/3Nb2/3) O-3-0.075 Pb(Mn1/3Nb2/3)O-3-0.8 Pb(Zr0.48Ti0.52)O-3(PZMNZT-xFe; x = 0.05-0.35) piezoelectric ceramics were prepared to enhance v(0), and the favorable comprehensive electrical properties, such as d(33) = 315 pC/N, Q(m) = 1738, k(p) = 0.58, k(t) = 0.48, & epsilon;(r) = 1156, tan & delta; = 0.4%, and T-c = 320 & DEG;C, were achieved in the PZMNZT-0.15Fe ceramic. Most importantly, the PZMNZT-0.15Fe ceramic presented a reliable v(0) of 0.90 m/s, which was 2.25 times of the commercial PZT4 ceramic (& SIM;0.40 m/s). The excellent high-power performance should be attributed to ordering functional elements such as crystal grains and ferroelectric domains. Overall, this work reveals that the PZMNZT-0.15Fe ceramic is competitive for high-power applications.

Automated summary

In this study, Fe2O3-doped high-power piezoelectric ceramics PZMNZT-0.15Fe were prepared, which showed excellent electrical properties with a piezoelectric coefficient of 315 pC/N, mechanical quality factor of 1738, and an output vibration velocity of 0.90 m/s, 2.25 times higher than commercial PZT4 ceramic. This work reveals the competitiveness of PZMNZT-0.15Fe ceramic for high-power applications.