Complete set of material constants of Pb(In(12)Nb(12))O(3)-Pb(Mg(13)Nb(23))O(3)-PbTiO(3)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(In(12)Nb(12))O(3)-(1-x-y)Pb(Mg(13)Nb(23))O(3)-yPbTiO(3) (PIN-PMN-PT) single crystals poled along [001](c). Compared with the MPB composition (1-x)Pb(Mg(13)Nb(23))O(3)-xPbTiO(3) (PMN-PT) single crystals, the PIN-PMN-PT single crystals have smaller anisotropy, higher Curie temperature (T(c) approximately 197 degrees C), and higher rhombohedral to tetragonal phase transition temperature (T(R-T) approximately 96 degrees C). The electromechanical properties obtained here are the best found so far for this ternary system with d(33) approximately 2742 pCN, d(31) approximately -1337 pCN, k(33) approximately 95%, and k(31) approximately 65%.