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

Abstract High‐power piezoelectric ceramics are typically driven to output vibration velocity ( v 0 ) under high AC electric fields. Herein, the Fe 2 O 3 doped 0.125 Pb(Zn 1/3 Nb 2/3 ) O 3 –0.075 Pb(Mn 1/3 Nb 2/3 )O 3 –0.8 Pb(Zr 0.48 Ti 0.52 )O 3 (PZMNZT– x Fe; 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, ε r = 1156, tan δ = 0.4%, and T c = 320°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 (∼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.