Fast oxygen diffusion in bismuth oxide probed by quasielastic neutron scattering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Sciences Directorate. Chemical and Engineering Materials Division
In this paper, we present the first, to our knowledge, study of solid state oxygen translational diffusion by quasielastic neutron scattering. Such studies in the past might have been precluded by relatively low diffusivities of oxygen anions in the temperature range amenable to neutron scattering experiments. To explore the potential of the quasielastic scattering technique, which can deduce atomic diffusion jump length of oxygen anions through the momentum transfer dependence of the scattering signal, we have selected the fastest known oxygen conductor, bismuth oxide. Finally, we have found the oxygen anion jump length in excellent agreement with the nearest oxygen-vacancy distance in the anion sublattice of the fluorite-related structure of bismuth oxide.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1327676
- Alternate ID(s):
- OSTI ID: 1397042
- Journal Information:
- Solid State Ionics, Vol. 296; ISSN 0167-2738
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Study on electrical conductivity and oxygen migration of the oxide-ion conductors $$\hbox {Na}_{0.5}\hbox {Bi}_{0.5}\hbox {Ti}_{1-x}\hbox {Mg}_{{x}}\hbox {O}_{3-x}$$ Na 0.5 Bi 0.5 Ti 1 - x Mg x O 3 - x
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Brownmillerite-Type Sr2ScGaO5 Oxide Ion Conductor: Local Structure, Phase Transition, and Dynamics
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Insight into Design of Improved Oxide Ion Conductors: Dynamics and Conduction Mechanisms in the Bi0.913V0.087O1.587 Solid Electrolyte
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