Universal Phase Diagram for High-Piezoelectric Perovskite Systems

Abstract

Strong piezoelectricity in the perovskite-type PbZr(1-x)TixO3 (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 a new 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, which attributes these low-symmetry phases to the high anharmonicity in these oxide systems.

REVTeX file. 4 pages,=A0 4 figures embedded

Cited by in corpus (28)

• Phase diagram of the ferroelectric-relaxor (1-x)PbMg(1/3)Nb(2/3)O3-xPbTiO3
• Monoclinic phase in the relaxor-based piezo-/ ferroelectric Pb(Mg${}_{1/3}$Nb${}_{2/3})O_3$-PbTiO${}_3$ system
• Phase diagram of the relaxor ferroelectric (1-x)PbZn(1/3)Nb(2/3)O3-xPbTiO3
• Monoclinic structure of unpoled morphotropic high piezoelectric (PbMg1/3Nb2/3O3)0.65-(PbTiO3)0.35 and (PbZn1/3Nb2/3O3)0.91-(PbTiO3)0.09 compounds
• Phase instability induced by polar nanoregions in a relaxor ferroelectric system
• Combinatorial discovery of a lead-free morphotropic phase boundary in a thin-film piezoelectric perovskite
• X-ray and Neutron Diffraction Investigations of the Structural Phase Transformation Sequence under Electric Field in 0.7Pb(Mg1/3Nb2/3)-0.3PbTiO3 Crystals
• Electric-field induced phase transitions in rhombohedral PZN-xPT
• Ground State of Relaxor Ferroelectric $Pb(Z{n}_{1/3}N{b}_{2/3})O_3$
• Dual structures in PZN-xPT ferroelectric relaxors
• Neutron Scattering Study of Relaxor Ferroelectric (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3
• Anomalous transverse acoustic phonon broadening in the relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O_3
• An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn${}_{1/3}$Nb${}_{2/3}$)O${}_3$
• Ab initio linear response and frozen phonons for the relaxor PMN (PbMg1/3Nb2/3O3)
• Ferroelectric Properties of Monoclinic Pb(Mg1/3Nb2/3)O3 - PbTiO3 Crystals
• Structural study in Highly Compressed BiFeO3 Epitaxial Thin Films on YAlO3
• Competing orders in PZN-xPT and PMN-xPT relaxor ferroelectrics
• Polar Order in Quantum Paraelectric SrTiO3-16 and SrTiO3-18 at Low Temperature
• A possible four-phase coexistence in a single-component system
• Effects of atomic short-range order on the properties of perovskite alloys in their morphotropic phase boundary
• Lattice rotation vortex at the monoclinic ferroelectric domain boundary in relaxor ferroelectric crystal
• Entropic patchiness drives multi-phase coexistence in discotic colloid-depletant mixtures
• Symmetry of high-piezoelectric Pb-based complex perovskites at the morphotropic phase boundary II. Theoretical treatment
• Epitaxially strained SnTiO${}_3$ at finite temperatures
• Electric field effect on short-range polar orders in a relaxor ferroelectric system
• Anomalous behavior of acoustic phonon mode and central peak in Pb(Zn1/3Nb2/3)0.85Ti0.15O3 single crystal studied using Brillouin scattering
• Phonon coupling to dynamic short-range polar order in a relaxor ferroelectric near the morphotropic phase boundary
• Stability, Evolution and Switching of Ferroelectric Domain Structures in Lead-free BaZr${}_{0.2}$Ti${}_{0.8}$O${}_3$-Ba${}_{0.7}$Ca${}_{0.3}$TiO${}_3$ System: Thermodynamic Analysis and Phase-field Simulations