Complete set of elastic, dielectric, and piezoelectric coefficients of [-101] poled 0.23Pb(In_(1/2)Nb_(1/2)O_3)-0.45Pb(Mg_(1/3)Nb_(2/3))O_3-0.32PbTiO_3 single crystals

摘要

In order to better utilize the superior transverse and shear piezoelectric properties of 0.23Pb(In_(1/2)Nb_(1/2)O_3)-0.45Pb(Mg_(1/3)Nb_(2/3))O_3-0.32PbTiO_3 single crystals near the morphotropic phase boundary, a complete set of elastic, dielectric, and piezoelectric coefficients of [1 0 1] poled single crystal were determined by resonance and ultrasonic methods at room temperature. The electromechanical coupling coefficient k_(32) and transverse piezoelectric coefficient d_(32) can reach 0.94 and -2073 pC/N, respectively. At the same time, electromechanical coupling coefficient k_(15) and shear piezoelectric constant d_(15) are as high as 0.91 and 2526 pC/N. This complete set of material properties will provide convenience for device designs and fundamental theoretical studies such as applications in high-sensitivity medical ultrasonic transducers and large displacement actuators.