title: Orientation dependence of electromechanical properties of relaxor based ferroelectric single crystals.
abstract: The orientation dependence of electromechanical properties of relaxor based ferroelectric single crystals Pb(Zn1/3Nb2/3)O3-(6-7)%PbTiO3and Pb(Mg1/3Nb2/3)O3-33%PbTiO3has been calculated by coordinate transformation. Different from previous studies, the optimum cutting orientations have been predicted in terms of their piezoelectric responses in the corresponding crystal planes. The calculation results indicated that the anisotropic piezoelectric effects of [001]cand [011]cpoled multi-domain crystals mainly come from the intrinsic contribution. However, the strong dielectric anisotropy of [001]cpoled multi-domain crystals mainly comes from extrinsic domain and domain wall contributions. For [011]cpoled multi-domain crystals, the intrinsic orientation effect enhances the dielectric anisotropy.
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xiang
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Physics, Harbin Institute of Technology, Harbin 150080, Heilongjiang, China.
authors.forename: Wenwu
authors.initials: W
authors.lastname: Cao