Dielectric and piezoelectric properties of Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystals

stabilise the tetragonal phase. The strain measurements have been used to determine the d33 values in both phases as afunction of temperature. The PZN-PT crystals have their polar direction along the axis but not much has beenreported on the piezoelectric properties of crystals poled in this direction. We have used laser Doppler interferometry tomeasure the piezoelectric strains as a function of DC bias field applied in the direction in PZN-PT crystals and wehave determined values of the piezoelectric coefficients as a function of the DC bias field. High d15 values over 3000pC/N have been observed along direction.Keywords: Piezoelectric, dielectric, phase transition, PZN-PT, single crystal, relaxor