Virginia TechConlon, K. H.Luo, HongjieViehland, Dwight D.Li, JiefangWhan, T.Fox, J. H.Stock, ChrisShirane, Gen2014-02-112014-02-112004-11-19Conlon, KH ; Luo, H ; Viehland, D ; et al., Nov 2004. "Direct observation of the near-surface layer in Pb(Mg1/3Nb2/3)O-3 using neutron diffraction," PHYSICAL REVIEW B 70(17): 172204 DOI: 10.1103/PhysRevB.70.1722041098-0121http://hdl.handle.net/10919/25365Spatially resolved neutron diffraction as a function of crystal depth in Pb(Mg1/3Nb2/3)O-3 reveals the presence of a distinct near-surface region where a strong distortion in the lattice exists. 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 similar to100 mum. 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.application/pdfen-USIn Copyright2nd length scaleSingle crystalsScatteringPhaseTerbiumPhysicsArticle - Refereedhttp://link.aps.org/doi/10.1103/PhysRevB.70.172204https://doi.org/10.1103/PhysRevB.70.172204