Enhanced high‐power performance of Fe‐doped PZMNZT piezoelectric ceramics
Wenbin Tang, Yuequn Wang, Guanglei Xiang, Xuefeng Zhao, Zhiyong Pan, Yiping Wang, Ying Yang, Yaojin Wang, Guoliang Yuan
Abstract
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.