Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals

Details Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals

2012-04-26

arxiv.org/abs/1204.5878v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

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 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.

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