2001/02/25 by D. E. Cox, Beatriz Noheda, B. Noheda +5 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Ferroelectric and Piezoelectric Materials #Multiferroics and related materials #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.1384475
published as Appl. Phys. Lett. 79, 400 (2001) · REVTeX file. 4 pages,=A0 4 figures embedded
arxiv created 2001/02/25 · openalex publication_date 2001/07/16 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
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.