A Combined Total Scattering and Simulation Approach to Analyzing Defect Structure in Bi3YO6

Norberg, Stefan, 1972 (author): Chalmers tekniska högskola,Chalmers University of Technology

Kozanecka-Szmigiel, A. (author): Politechnika Warszawska,Warsaw University of Technology

(creator_code:org_t)

2010-07-19
2010
English.
In: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 22:15, s. 4435-4445

Related links:: http://dx.doi.org/10...; show more...; https://doi.org/10.1...; https://research.cha...; show less...

Abstract Subject headings

The defect structure and electrical properties of the fast oxide ion-conducting solid electrolyte delta-Bi3YO6 have been studied using a combination of total neutron scattering analysis, energy minimization methods, and AC impedance spectroscopy. Conventional structural analysis using the Rietveld method reveals the oxide ions to be distributed over three crystallographic sites at room temperature, with a small change in this distribution at 800 degrees C. Analysis of short-range correlations using a total neutron scattering approach yields information on Bi and Y coordination environments. Careful analysis of the angular distribution functions derived from reverse Monte Carlo modeling of the total scattering data reveals physical evidence for a predominance of vacancy ordering in this system. This ordering is confirmed as the lowest energy configuration in parallel energy minimization simulations.

By the author/editor: Abrahams, I.; Liu, X.; Hull, S.; Norberg, Stefan, ...; Krok, F.; Kozanecka-Szmigi ...; show more...; Islam, M. S.; Stokes, S. J.; show less...

About the subject

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