title: Monoclinic M(B) phase and phase instability in [110] field cooled Pb(Zn(13)Nb(23))O(3)-4.5%PbTiO(3) single crystals.
abstract: We report the finding of a monoclinic M(B) phase in Pb(Zn(13)Nb(23))O(3)-4.5%PbTiO(3) single crystals. High precision x-ray diffraction investigations of [110] field cooled crystals have shown a transformation sequence of cubic(C)-->tetragonal(T)-->orthorhombic(O)-->monoclinic(M(B)), which is different from that previously reported [A.-E. Renault et al., J. Appl. Phys. 97, 044105 (2005)]. Beginning in the zero-field-cooled condition at 383 K, a rhombohedral (R)-->M(B)-->O sequence was observed with increasing field. Coexisting M(B) and O phases were then found upon removal of field, which fully transformed to M(B) on cooling to room temperature.
authors.affiliation: Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yao
authors.forename: Hu
authors.initials: H
authors.lastname: Cao
authors.forename: Wenwei
authors.initials: W
authors.lastname: Ge
authors.forename: Jiefang
authors.initials: J
authors.lastname: Li
authors.forename: D
authors.initials: D
authors.lastname: Viehland