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arXiv · 1204.5878

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

R. G. Burkovsky·Yu. A. Bronwald·A. V. Filimonov·A. I. Rudskoy·D. Chernyshov·A. Bosak·J. Hlinka·X. Long·Z. -G. Ye·S. B. Vakhrushev
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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 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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R. G. Burkovsky, Yu. A. Bronwald, A. V. Filimonov, A. I. Rudskoy, D. Chernyshov, A. Bosak, J. Hlinka, X. Long, Z. -G. Ye, S. B. Vakhrushev. 2012-04-26. Structural heterogeneity and diffuse scattering in morphotropic lead zirconate-titanate single crystals. https://doi.org/10.1103/physrevlett.109.097603

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