title: Poling field versus piezoelectric property for [001]coriented 91%Pb(Zn1/3Nb2/3)O3-9%PbTiO3single crystals.
abstract: Electromechanical property measurements and microstructure observations using optical microscopy were performed on a [001]corientedk33resonator made of 91%Pb(Zn1/3Nb2/3)O3-9%PbTiO3single crystal, which was polarized under different electric fields. At room temperature, when the poling field is 1100 V/mm, the electromechanical coupling factork33is 0.90 and piezoelectric coefficientd33is 1665 pC/N. Such superior electromechanical properties could be attributed to the formation of monoclinic multi-domain structure, which transforms to tetragonal phase at 46 °C. While at a higher poling field of 1200 V/mm, the crystal becomes single-domain tetragonal state and itsk33andd33are only about 0.69 and 850 pC/N, respectively. The critical poling field to transform the monoclinic phase to the tetragonal phase is found to be ~1120 V/mm.
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