Investigation of single and multidomain Pb(In0.5Nb0.5)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 crystals with mm2 symmetry

The piezoelectric properties of Pb(In(0.5)Nb(0.5))O(3)-Pb(Mg(1∕3)Nb(2∕3))O(3)-PbTiO(3) crystals with various engineered domain configurations were investigated. Rhombohedral and monoclinic∕orthorhombic crystals poled along their crystallographic [011] directions were found to possess macroscopic mm2 symmetry, with "2R" and "1O" domain, respectively. Crystals with the "2R" domain configuration were found to exhibit high extensional piezoelectric coefficients d(33) (∼1300 pC∕N) and d(32) (∼-1680 pC∕N), while crystals with the "1O" configuration possessed high shear coefficients d(15) (∼3500 pC∕N) and d(24) (∼2070 pC∕N), with relatively low extensional piezoelectric coefficients d(33) (∼340 pC∕N) and d(32) (∼-260 pC∕N). The observed results were explained by "polarization rotation" model, as related to their respective domain configurations.