Enhanced Piezoelectric Properties and High‐Power Performance of Sr‐Doped Pb(Mn,Sb)O ₃ ‐Pb(Zr,Ti)O ₃ Ceramics

The piezoelectric coefficient ( d 33 ) and mechanical quality factor ( Q m ) are among the critical parameters for high‐power piezoelectric applications. However, the trade‐off between them poses a significant challenge in cutting‐edge application scenarios. Herein, the 0.05Pb(Mn 1/3 Sb 2/3 )O 3 ‐0.95Pb 1‐ x Sr x (Zr 0.5 Ti 0.5 )O 3 (PMS‐PSr x ZT, x = 0.00–0.05) piezoelectric ceramics were synthesized using the conventional solid‐state reaction route, and the influence of strontium substitution on the microstructure evolution and electrical performance was investigated in detail. When x = 0.03, the optimal comprehensive performance, characterized by a high d 33 ∼ 342 pC/N and a high Q m ∼ 1537, is achieved, suggesting the alleviated inverse relationship between d 33 and Q m . Moreover, the maximum vibration velocity reaches 0.92 m/s at 80 V/mm while maintaining 0.8 m/s at 150°C, along with remarkable long‐term operational stability, demonstrating excellent potential for the high‐power applications. These results indicate that PMS‐PSr x ZT ( x = 0.03) ceramic integrates outstanding piezoelectric properties and high‐power performance with thermal stability, making it as a highly suitable material for advanced ultrasonic transducer devices.