Universal phase diagram for high-piezoelectric perovskite systems

By D. Cox, Beatriz Noheda, G. Shirane, Y. Uesu, K. Fujishiro, Y. Yamada. 2001

280 citations recorded by the source corpus.

Strong piezoelectricity in perovskite-type PbZn1−xTixO3 (PZT) and Pb(Zn1/3Nb2/3)O3–PbTiO3 (PZN–PT) systems is generally associated with the existence of a morphotropic phase boundary (MPB) separating regions with rhombohedral and tetragonal symmetry. An x-ray study of PZN–9% PT has revealed the presence of an orthorhombic phase at the MPB, and a near-vertical boundary between the rhombohedral and orthorhombic phases, similar to that found for PZT between the rhombohedral and monoclinic phases. We discuss the results in the light of a recent theoretical paper by Vanderbilt and Cohen [Phys. Rev. B 63, 94108 (2001)], which attributes these low-symmetry phases to the high anharmonicity in these oxide systems.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/39c9002eaab8d0f3a734f31f2d795e0feb87e6dd

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In Biomedical Engineering

1. K. Rabe
2. J. Triscone
3. M. Dawber

In Electronic, Optical and Magnetic Materials

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In Materials Chemistry

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4. J. Scott

Citations in the corpus

• Modern Physics of Ferroelectrics: Essential Background (2007, background): “Structurally, this phase acts as a bridge between the tetragonal and the rhombohedral phase, as confirmed by first-principles investigation [41]; this behavior appears to be common to other lead-based perovskites as well [ 42 ].”