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Short-Range Ordering by Displacement of Tl and O Atoms in Tl2CaBa2cu2O8 Studied by Pair Distribution Function and Rietveld Analysis
Published online by Cambridge University Press: 21 February 2011
Abstract
Atomic pair distribution function analysis has demonstrated displacements of Tl and O atoms within the Tl-O layers with shortrange ordering of lower symmetry than the crystallographic lattice. Two models have been proposed for these displacements. Rietveld analysis neither confirms nor contradicts these models. Temperature-dependent PDF measurements show changes in local structure correlating with temperature.
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- Copyright © Materials Research Society 1989