Direct observation of the near-surface layer in Pb(Mg${}_{1/3}$Nb${}_{2/3}$)O${}_3$ using neutron diffraction

Abstract

Spatially resolved neutron diffraction as a function of crystal depth in Pb(Mg${}_{1/3}$Nb${}_{2/3}$)O${}_3$ reveals the presence of a distinct near-surface region. A dramatic change in both the lattice constant and the Bragg peak intensity as a function of crystal depth is observed to occur in this region over a length scale $\sim$ 100 $\mu$m. This confirms a previous assertion, based on a comparison between high-energy x-rays and neutrons, that such a near surface region exists in the relaxors. Consequences to both single crystal and powder diffraction measurements and previous bulk neutron diffraction measurements on large single crystals are discussed.

arXiv comment4 pages, 4 figures

References in corpus (4)

• Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3
• Ground State of Relaxor Ferroelectric $Pb(Z{n}_{1/3}N{b}_{2/3})O_3$
• A Universal Phase Diagram for PMN-xPT and PZN-xPT
• An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn${}_{1/3}$Nb${}_{2/3}$)O${}_3$

Cited by in corpus (15)

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• Neutron and X-ray diffraction study of cubic [111] field cooled Pb(Mg1/3Nb2/3)O3
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• 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
• Anisotropic Band-Split Magnetism in Magnetostrictive CoFe${}_2$O${}_4$
• Magnetic skin effect in Pb(Fe${}_{1/2}$Nb${}_{1/2}$)O${}_3$