ISIS Neutron and Muon Source Data Journal

Oxide ion and proton dynamics in the novel ionic conductor Ba7Nb4MoO20

Abstract: Oxide-ion and proton-conducting materials attract considerable interest thanks to their application as electrolytes in solid-oxide fuel cells (SOFCs). We have recently identified remarkable oxide ion and proton conductivity in Ba7MoNb4O20, a cation-deficient hexagonal perovskite derivative with an average crystal structure composed by palmierite-like layers alternated with hexagonal perovskite units. Ba7MoNb4O20 presents considerable local cation and anion disorder. Oxygen disorder along the palmierite-like layers leads to mixed coordination environments for Mo/Nb cations and produces pathways for ionic diffusion. Via quasielastic neutron scattering measurements as function of temperature, we aim to investigate the oxide ion and proton dynamics and gain more in-depth detail of the ionic diffusion mechanism in this fascinating novel conductor.

Principal Investigator: Dr Sacha Fop
Local Contact: Dr Sanghamitra Mukhopadhyay
Experimenter: Professor Abbie McLaughlin

DOI: 10.5286/ISIS.E.RB2010049

ISIS Experiment Number: RB2010049

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:
Dr Sacha Fop et al; (2020): Oxide ion and proton dynamics in the novel ionic conductor Ba7Nb4MoO20 , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010049

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