Ground State of Relaxor Ferroelectric $Pb(Z{n}_{1/3}N{b}_{2/3})O_3$

Abstract

High energy x-ray diffraction measurements on Pb(Zn${}_{1/3}$Nb${}_{2/3}$)O${}_3$ (PZN) single crystals show that the system does not have a rhombohedral symmetry at room temperature as previously believed. The new phase (X) in the bulk of the crystal gives Bragg peaks similar to that of a nearly cubic lattice with a slight tetragonal distortion. The Bragg profile remains sharp with no evidence of size broadening due to the polar micro crystals (MC). However, in our preliminary studies of the skin, we have found the expected rhombohedral (R) phase as a surface state. On the other hand, studies on an electric-field poled PZN single crystal clearly indicate a rhombohedral phase at room temperature.

arXiv comment11 pages with 3 figures

References in corpus (8)

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• Polarization rotation via a monoclinic phase in the piezoelectric 92%PbZn1/3Nb2/3O3-8%PbTiO3
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• Universal Phase Diagram for High-Piezoelectric Perovskite Systems
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• Diffuse Neutron Scattering Study of a Disordered Complex Perovskite Pb(Zn1/3Nb2/3)O3 Crystal
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Cited by in corpus (27)

• A Neutron Elastic Diffuse Scattering Study of PMN
• X-ray and Neutron Diffraction Investigations of the Structural Phase Transformation Sequence under Electric Field in 0.7Pb(Mg1/3Nb2/3)-0.3PbTiO3 Crystals
• A reassessment of the Burns temperature and its relationship to the diffuse scattering, lattice dynamics, and thermal expansion in the relaxor PMN
• Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3
• Dual structures in PZN-xPT ferroelectric relaxors
• Structural phase transition and dielectric relaxation in Pb(Zn1/3Nb2/3)O3 single crystals
• A Universal Phase Diagram for PMN-xPT and PZN-xPT
• Damped Soft Phonons and Diffuse Scattering in 40PMN-60PT
• High pressure phases in highly piezoelectric Pb(Zr0.52Ti0.48)O3
• Coexistence and competition of local- and long-range polar orders in a ferroelectric relaxor
• Neutron and X-ray diffraction study of cubic [111] field cooled Pb(Mg1/3Nb2/3)O3
• Soft phonon columns on the edge of the Brillouin zone in the relaxor PbMg1/3Nb2/3O3
• An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn${}_{1/3}$Nb${}_{2/3}$)O${}_3$
• Direct observation of the near-surface layer in Pb(Mg${}_{1/3}$Nb${}_{2/3}$)O${}_3$ using neutron diffraction
• Electric Field Effects on the Diffuse Scattering in PZN-8%PT
• Competing orders in PZN-xPT and PMN-xPT relaxor ferroelectrics
• Paraelectric and Ferroelectric States in a Model for Relaxor Ferroelectrics
• Dynamic origin of the morphotropic phase boundary - Soft modes and phase instability in 0.68Pb(Mg1/3Nb2/3O3)-0.32PbTiO3
• Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping
• Depth dependant element analysis of PbMg${}_{1/3}$Nb${}_{2/3}$O${}_3$ using muonic X-rays
• Fluctuating defects in the incipient relaxor K${}_{1-x}$Li${}_x$TaO${}_3$ (x=0.02)
• Broadband critical dynamics in disordered lead-based perovskites
• Fast broadband cluster spin-glass dynamics in PbFe${}_{1/2}$Nb${}_{1/2}$O${}_3$
• Non-equilibrium Strain Relaxation Noise in the Relaxor Ferroelectric (PbMg1/3Nb2/3O3)100-x( PbTiO3)x
• Magnetic skin effect in Pb(Fe${}_{1/2}$Nb${}_{1/2}$)O${}_3$
• Anisotropic Band-Split Magnetism in Magnetostrictive CoFe${}_2$O${}_4$
• Dynamics and Structure of PMN and PZN