Comparison of short-range ion-ion correlations in the alpha, beta and delta phases of Bi2O3
Journal article, 2011
Neutron total scattering data for alpha-Bi(2)O(3) and delta-Bi(2)O(3), considering both the Bragg and diffuse components, have been analysed by the reverse Monte Carlo (RMC) method to extract experimental information concerning the short-range correlations between pairs of ions. These results complement the average structural information provided by conventional Rietveld refinement of the Bragg scattering alone. The radial and angular distribution functions in the stable ambient temperature alpha phase and superionic delta phase of Bi(2)O(3) are presented and compared with the corresponding data for the metastable beta phase reported previously. These data provide an important insight into the nature of the anion disorder within the highly conducting delta phase and the relationship between the delta phase and its ordered alpha and beta counterparts.
Reverse Monte Carlo (RMC)
conductivity
Neutron total scattering
SOFC material
bismuth sesquioxide
interactions
delta-bi2o3
Short-range ion
Oxide conductivity
doped ceria
Bismuth sesquioxide
system
diffraction
oxide fuel-cells
Author
Stefan Norberg
Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry
Sten Eriksson
Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry
S. Hull
STFC Rutherford Appleton Laboratory
Solid State Ionics
0167-2738 (ISSN)
Vol. 192 1 409-412Subject Categories
Chemical Sciences
DOI
10.1016/j.ssi.2010.01.027