Complete set of material constants of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystal with morphotropic phase boundary composition

Using combined resonance and ultrasonic methods, a full set of material constants has been measured for morphotropic phase boundary (MPB) composition xPb(In1/2Nb1/2)O-3-(1-x-y )Pb(Mg1/3Nb2/3)O-3-yPbTiO(3) (PIN-PMN-PT) single crystals poled along [001](c). Compared with the MPB composition (1-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) (PMN-PT) single crystals, the PIN-PMN-PT single crystals have smaller anisotropy, higher Curie temperature (T-c approximate to 197 degrees C), and higher rhombohedral to tetragonal phase transition temperature (TR-T approximate to 96 degrees C). The electromechanical properties obtained here are the best found so far for this ternary system with d(33) approximate to 2742 pC/N, d(31) approximate to -1337 pC/N, k(33) approximate to 95%, and k(31) approximate to 65%. (C) 2009 American Institute of Physics. [doi:10.1063/1.3243169]