Full matrix electromechanical properties of textured Pb(In1/2Nb1/2)O3-Pb(Sc1/2Nb1/2)O3-PbTiO3 ceramic

Textured relaxor-PbTiO3 (PT) ceramics possess advantages of crystal-like properties, high composition homogeneity, and low cost, and have, thus, received considerable attention from the piezoelectric community. To promote the applications of textured relaxor-PT ceramics, here we characterize the full electromechanical parameters (elastic, dielectric, and piezoelectric coefficients) and the frequency dependence of the coercive field (E-C) for the recently reported textured Pb(In1/2Nb1/2)O-3-Pb(Sc1/2Nb1/2)O-3-PbTiO3 (PIN-PSN-PT) ceramic. Our results show that the textured PIN-PSN-PT ceramic possesses high piezoelectric coefficients (d(31) = -365 pC N-1, d(33) = 770 pC N-1, and g(33) = 40.4 x 10(-3) m(2) C-1) and electromechanical coupling factors (k(33) = 87% and k(p) = 82%), far outperforming those of the commercial ceramic PZT-5H (d(31) = -274 pC N-1, d(33) = 593 pC N-1, g(33) = 1.97 x 10(-2) m(2) C-1, k(33) = 75%, and k(p) = 65%). In addition, the textured PIN-PSN-PT ceramic exhibits lower dielectric constants (epsilon(S)(33) = 478) compared with PZT-5H and relaxor-PT crystals, which can greatly promote the sensitivity of receiving transducers. Moreover, the textured PIN-PSN-PT ceramic with a high Tr-t (172 degrees C) shows better thermal stability compared to commercial relaxor-PT crystals (Tr-t < 130 degrees C). The results presented here will benefit the development of piezoelectric devices made of textured ceramics. Published under an exclusive license by AIP Publishing. https://doi.org/10.1063/5.0085274