title: Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals.
abstract: Complementary diffuse and inelastic synchrotron x-ray scattering measurements of lead zirconate-titanate single crystals with composition near the morphotropic phase boundary (x=0.475) are reported. In the temperature range 293 K<T<400 K a highly anisotropic quasielastic diffuse scattering is observed. Above 400 K this scattering disappears. Its main features can be reproduced by the model of inhomogeneous lattice deformations caused by inclusions of a tetragonal phase into a rhombohedral or monoclinic phase. This observation supports the idea that PZT at its morphotropic phase boundary is essentially structurally inhomogeneous.
authors.affiliation: St. Petersburg State Politekhnical University, St-Petersburg, Russia. rg.burkovsky@mail.ioffe.ru
authors.forename: R G
authors.initials: RG
authors.lastname: Burkovsky
authors.forename: Yu A
authors.initials: YA
authors.lastname: Bronwald
authors.forename: A V
authors.initials: AV
authors.lastname: Filimonov
authors.forename: A I
authors.initials: AI
authors.lastname: Rudskoy
authors.forename: D
authors.initials: D
authors.lastname: Chernyshov
authors.forename: A
authors.initials: A
authors.lastname: Bosak
authors.forename: J
authors.initials: J
authors.lastname: Hlinka
authors.forename: X
authors.initials: X
authors.lastname: Long
authors.forename: Z-G
authors.initials: ZG
authors.lastname: Ye
authors.forename: S B
authors.initials: SB
authors.lastname: Vakhrushev