Electric-field induced phase transitions in rhombohedral PZN-xPT

Abstract

High-energy x-ray diffraction experiments peformed on rhombohedral (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3(PZN-xPT) crystals with x= 4.5 and 8% show that an electric field applied along the [001] direction induces the tetragonal phase, as proposed by Park and Shrout. Our experiments reveal that in 4.5PT such phase change occurs via a third phase with monoclinic symmetry, MA, which is observed at intermediate field values. This is in agreement with first-principles calculations by Fu and Cohen predicting the rotation of the polarization between the rhombohedral and tetragonal phases in this material. A different polarization path between the rhombohedral and tetragonal phases, through a second monoclinic phase, MC, has been previously reported in 8PT. The microscopic characterization of these crystals allows us to explain the ultra-high macroscopic strain observed in PZN-x%PT under an electric field. Moreover, some unusual scattering profiles displayed by exceptionally good crystals, are experimental evidence of the high anharmonicities and near-degeneracy of the different phases in these extremely deformable materials.

arXiv commentREVTeX4, 8 two-column pages, 8 figures embedded

References in corpus (13)

• Origin of the high piezoelectric response in PbZr(1-x)TixO3
• A monoclinic ferroelectric phase in the Pb(Zr1-xTix)O3 solid solution
• A tetragonal-to-monoclinic phase transition in a ferroelectric perovskite: the structure of PbZr(0.52)Ti(0.48)O3
• Polarization rotation via a monoclinic phase in the piezoelectric 92%PbZn1/3Nb2/3O3-8%PbTiO3
• Monoclinic and triclinic phases in higher-order Devonshire theory
• Finite-temperature properties of PZT alloys from first principles
• 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
• Universal Phase Diagram for High-Piezoelectric Perovskite Systems
• Electric-field induced polarization paths in PZT alloys
• Symmetry of high-piezoelectric Pb-based complex perovskites at the morphotropic phase boundary I. Neutron diffraction study on Pb(Zn1/3Nb2/3)O3 -9%PbTiO3
• Neutron Diffraction Study of the Irreversible R-MA-MC Phase Transition in Single Crystal Pb[(Zn1/3Nb2/3)1-xTix]O3

Cited by in corpus (18)

• Phase instability induced by polar nanoregions in a relaxor ferroelectric system
• Stress-induced R-MA-MC-T symmetry changes in BiFeO3 films
• X-ray and Neutron Diffraction Investigations of the Structural Phase Transformation Sequence under Electric Field in 0.7Pb(Mg1/3Nb2/3)-0.3PbTiO3 Crystals
• Neutron Diffraction Study of Field Cooling Effects on Relaxor Ferroelectrics Pb[(Zn_{1/3} Nb_{2/3})_{0.92} Ti_{0.08}] O_{3}
• Multiferroic phase transition near room temperature in BiFeO3 films
• Intermediate ferroelectric orthorhombic and monoclinic MB phases in [110]- electric field cooled Pb(Mg1/3Nb2/3)O3-30%PbTiO3 crystals
• Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3
• Fragile phase stability in (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO3 crystals: A comparisons of [001] and [110] field-cooled phase diagrams
• Dual structures in PZN-xPT ferroelectric relaxors
• Damped Soft Phonons and Diffuse Scattering in 40PMN-60PT
• Ab initio linear response and frozen phonons for the relaxor PMN (PbMg1/3Nb2/3O3)
• Electric-field-induced phase transition of <001> oriented Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals
• Competing orders in PZN-xPT and PMN-xPT relaxor ferroelectrics
• Structural phase transformation and phase boundary/stability studies of field-cooled Pb(Mg1/3Nb2/3O3)-32%PbTiO3 crystals
• Polarization rotation and the electrocaloric effect in barium titanate
• Dynamic origin of the morphotropic phase boundary - Soft modes and phase instability in 0.68Pb(Mg1/3Nb2/3O3)-0.32PbTiO3
• Lattice rotation vortex at the monoclinic ferroelectric domain boundary in relaxor ferroelectric crystal
• The Structural Phase Transition of the Relaxor Ferroelectric 68%PbMg1/3Nb2/3O3-32%PbTiO3