Lee, Dong-Gyu Go, Su-hwan Yoo, Il-Ryeol Choi, Seong-Hui Kim, Yi Yeon Kim, Hyun Soo Hur, Sunghoon Kang, Heemin Baik, Jeong Min Park, Yong Seok Nahm, Sahn Kang, Chong-Yun Cho, Kyung-Hoon Song, Hyun-Cheol 2024-01-19T08:04:48Z 2024-01-19T08:04:48Z 2023-11-29 2023-11 0272-8842 https://pubs.kist.re.kr/handle/201004/113116 For high-power transducer applications, the piezoelectric materials should fulfill specific requirements of a high mechanical quality factor (Q(m)), a high piezoelectric strain coefficient (d(ij)), and a high Curie phase transition temperature (T-c). In this study, we present an investigation of the structural, piezoelectric, and high-power characteristics of Mn-doped 0.15Pb(Yb1/2Nb1/2)O-3-0.48Pb(Mg1/3Nb2/3)O-3-0.37PbTiO(3) (0.15PYN-0.48PMN-0.37PT) ceramics. The introduction of Mn dopants led to an increase in the tetragonal phase fraction within the 0.15PYN-0.48PMN-0.37 PT ceramics and the formation of oxygen vacancies, consequently significantly enhancing Q(m) due to their synergistic effect. Despite the hardening effect, the high value of the piezoelectric coefficient (d(33)) was maintained due to the increase in grain size. Particularly, the specimen doped with 3 mol% of Mn exhibited excellent piezoelectric properties of d(33) = 345 pC/N, Q(m) = 1159, and T-c = 207 degrees C. This specimen displayed a high vibration velocity of 0.6 m/s under the condition of equilibrium Delta T < 20 degrees C (temperature rise from initial temperature), thereby confirming its immense potential for high-power transducer applications. English Pergamon Press Ltd. Mn-doped 0.15Pb(Yb1/2Nb1/2)O3-0.48Pb(Mg1/3Nb2/3)O3-0.37PbTiO3 piezoelectric ceramics for high performance high-power transducers Article 10.1016/j.ceramint.2023.07.164 1 Ceramics International, v.49, no.21, pp.33480 - 33488 Ceramics International 49 21 33480 33488 Y scie scopus 001085279200001 2-s2.0-85168371860 Materials Science, Ceramics Materials Science Article PMN-PT CERAMICS ELECTROMECHANICAL PROPERTIES ELECTRICAL-PROPERTIES COEFFICIENT BEHAVIOR D(33) C. Piezoelectric properties D. Perovskites E. Actuators A. Powders: solid state reaction