Superior d32∗ and k32∗ coefficients in 0.955Pb(Zn1/3Nb2/3)O3–0.045PbTiO3 and 0.92Pb(Zn1/3Nb2/3)O3–0.08PbTiO3 single crystals poled along [011] Original Research Article

The elastic, piezoelectric and dielectric constants of [011] poled Y cut length extension bars made of 0.955Pb(Zn1/3Nb2/3)O3–0.045PbTiO3 (PZN–4.5%PT) and 0.92Pb(Zn1/3Nb2/3)O3–0.08PbTiO3 (PZN–8%PT) single crystals were fabricated and measured. The absolute value of piezoelectric coefficient of PZN–8%PT crystal poled along [011] reaches as high as 1887 pC/N, which is almost twice as its value. The electromechanical coupling coefficient of PZN–4.5%PT and PZN–8%PT crystals poled along [011] are 0.73 and 0.86, respectively, showing great application potential for transverse mode sensors, actuators and other electromechanical devices.