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A Combined Total Sc...
A Combined Total Scattering and Simulation Approach to Analyzing Defect Structure in Bi3YO6
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- Abrahams, I. (author)
- Queen Mary University of London
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- Liu, X. (author)
- Queen Mary University of London
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- Hull, S. (author)
- STFC Rutherford Appleton Laboratory
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- Norberg, Stefan, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Krok, F. (author)
- Politechnika Warszawska,Warsaw University of Technology
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- Kozanecka-Szmigiel, A. (author)
- Politechnika Warszawska,Warsaw University of Technology
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- Islam, M. S. (author)
- University of Bath
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- Stokes, S. J. (author)
- University of Bath
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(creator_code:org_t)
- 2010-07-19
- 2010
- English.
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In: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 22:15, s. 4435-4445
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- bismuth oxide
- system bi2o3-y2o3
- delta-bi2o3
- delta-phase
- fuel-cells
- oxide-ion conductors
- electrolytes
- solid
- conductivity
- crystal-structure
- computational simulations
Publication and Content Type
- art (subject category)
- ref (subject category)
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