J. Phys. IV France 126 (2005) 53-57
Temperature dependence of piezoelectric properties of PMN-PT and PZN-PT single crystalsA. Benayad1, G. Sebald1, B. Guiffard1, L. Lebrun1, D. Guyomar1 and E. Pleska2
1 INSA, LGEF, Bât. G. Ferrié, 8 rue de la Physique, 69621 Villeurbanne Cedex, France
2 DSP$/$STTC$/$DT$/$GN, 00460 Armées, France
The temperature dependence of the piezoelectric properties of 0.67Pb (Mg1 / 3Nb2 / 3)O3-0.33PbTiO3 and 0.955Pb(Mg1 / 3Nb2 / 3)O3-0.045PbTiO3 single crystals, respectively grown by Bridgman and modified Bridgman method was investigated. Due to their low rhombohedral to tetragonal transition temperature and Curie point (T = 152C and 166C), the properties of these single crystals have an unstable behavior as soon as the first transition temperature is reached, i.e. the piezoelectric coefficients exhibit a non linear or a hysteretic behavior during temperature cycle.
© EDP Sciences 2005