Lee, Kyoung-Woo Lee, Dong-Gyu Lee, Geun-Soo Lee, Byeong-Jae Kang, Heemin Nahm, Sahn Yan, Yongke Hur, Sunghoon Baik, Jeong Min Cho, Kyung-Hoon Song, Hyun-Cheol Lim, Sil-Mook 2025-09-17T02:31:27Z 2025-09-17T02:31:27Z 2025-09-16 2026-02 0955-2219 https://pubs.kist.re.kr/handle/201004/153175 This study investigates the effects of Mn doping on the microstructure, phase composition, and electromechanical properties of 0.03Pb(Mg1/3Nb2/3)O3-0.03Pb(Al1/2Nb1/2)O3-0.94Pb(Zr0.52Ti0.48)O3(PMN-PAN-PZT) ceramics for high-power piezoelectric applications. A composition with 0.3 wt% MnO2 doping was identified as the optimal, exhibiting excellent electromechanical coupling factor (kp= 63 %), piezoelectric coefficient (d33 = 370 pC/N), Curie temperature (TC = 310 degrees C), and mechanical quality factor (Qm = 1160). This enhanced performance is attributed to optimized grain growth, increased densification, and oxygen vacancy induced by acceptor doping. In contrast to conventional compositions that rely on high relaxor content containing expensive rare metals such as Nb, this study demonstrates that excellent electromechanical properties can be achieved with only 6 % PMN-PAN, through optimized doping and microstructural control. These findings suggest that Mn-doped PMN-PAN-PZT ceramics are promising cost-effective alternatives for ultrasonic transducers and actuators, where both mechanical quality factor and piezoelectric performance are critical. English Elsevier BV Simultaneously achieving large transducer figure-of-merits and high curie temperature through acceptor doping in PMN-PAN-PZT ternary system for high power applications Article 10.1016/j.jeurceramsoc.2025.117747 1 Journal of the European Ceramic Society, v.46, no.2 Journal of the European Ceramic Society 46 2 N scie scopus 001564290100002 2-s2.0-105014627350 Materials Science, Ceramics Materials Science Article FREE PIEZOELECTRIC CERAMICS ELECTRICAL-PROPERTIES PHASE-STRUCTURE MNO2 PERFORMANCE SIZE Acceptor doping Temperature stability Mechanical quality factor High-power applications PMN-PAN-PZT