Temperature Dependence of Elastic, Piezoelectric, and Dielectric Matrixes of [001]-Poled Rhombohedral PIN-PMN-PT Single Crystals

作者：Liao Qiao, Qian Li, Chaorui Qiu, Yangbin Liu, Jinfeng Liu, Zhuo Xu, Fei Li · 发表于：IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control · 年份：2019 · DOI：10.1109/tuffc.2019.2928371 · 被引用次数：24 · 研究领域：Ferroelectric and Piezoelectric Materials、Acoustic Wave Resonator Technologies、Optical and Acousto-Optic Technologies

To date, the complete sets of electromechanicalrelated coefficients of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3PbTiO3(PIN-PMN-PT) single crystals have been reported only at room temperature (RT). To meet the demands of practical applications, the full sets of elastic, piezoelectric, and dielectric constants of [001]-poled rhombohedral PIN-PMN-PT single crystals were measured as a function of temperature ranging from -10 °C to 70 °C by the resonance method. Variation trends of the material constants with temperature are discussed, and the corresponding mechanisms are analyzed. With increasing temperature, absolute values of the elastic compliance constants, the piezoelectric coefficients dij, and the dielectric permittivities eijincrease, but the piezoelectric voltage coefficients gijand the characteristic frequencies decrease. The electromechanical coupling factors kijare not sensitive to temperature, of which k33keeps 91% in the temperature range of -10 °C to 70 °C. Compared with other coefficients, the piezoelectric coefficients d31, d33, and d15, and the dielectric permittivities e11T, e33T, e11S, and e33S, show the largest enhancements with increasing temperature. For example, the piezoelectric coefficients d31and d33, and the dielectric permittivities e11Tand e33Tchange from -560 pC/N, 1130 pC/N, 1050, and 3300 at -10 °C to -890 pC/N, 1700 pC/N, 2030, and 6140 at 70 °C, increasing by more than 50% from -10 °C to 70 °C.