ISIS Neutron and Muon Source Data Journal

Acceptor-doped BiFeO3: Oxide Ion Conduction and Possible Structural Disorder.

Abstract: 2 days of beamtime is requested on Polaris to study the defect structure of an oxide-ion conductor Bi1-xBaxFeO3-x/2. RT total neutron scattering studies on samples heat treated in air, contain Fe3+/Fe4+ and are dominated by electronic conduction and contrast with samples annealed in N2 where oxidation is suppressed and oxide-ion conductivity is appreciable. The oxide-ion conductivity does not show a strong dependence across a wide range of x and is not in agreement with the enhanced conductivity maximum associated with the cross over from weak- to strong-electrolyte behaviour commonly reported for acceptor-doped oxide-ion conductors. Total neutron scattering data are required to investigate possible changes in local structure via clustering of oxygen vacancies and/or ordering of metal ions. This could lead to new strategies to develop new electrolytes for fuel cells.

Principal Investigator: Professor Derek Sinclair
Local Contact: Dr Ronald Smith
Experimenter: Dr Lin Hao Li
Experimenter: Dr Steve Hull
Experimenter: Dr ge wang

DOI: 10.5286/ISIS.E.RB1920262

ISIS Experiment Number: RB1920262

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Derek Sinclair et al; (2019): Acceptor-doped BiFeO3: Oxide Ion Conduction and Possible Structural Disorder., STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920262

Data is released under the CC-BY-4.0 license.