ISIS Neutron and Muon Source Data Journal

Towards intermediate temperature diffusion: oxygen dynamics in Ce(Nb,V)O4+d

Abstract: CeNbO4+d (0 <= d <= 0.33) displays mixed ionic-electronic conductivity at ~800 °C, where it adopts the tetragonal scheelite structure. Prior research has shown that partial substitution of Nb with V can lower the temperature of this transition, opening up the possibility of improved conductivity at temperatures closer to the “intermediate” range favoured for solid oxide fuel cell (SOFC) devices (500-700 °C). We will use quasielastic neutron scattering to study in detail the diffusion behaviour of oxide ions within the conductive scheelite phase of Ce(Nb,V)O4+d. Large single-crystal samples will enable to examine the distinct directional components of oxygen diffusion and compare the conduction behaviour to that determined theoretically for CeNbO4 and other candidate SOFC electrode materials with the scheelite structure.

Principal Investigator: Dr Josie Auckett
Experimenter: Professor Ivana Evans
Experimenter: Dr Sanghamitra Mukhopadhyay
Local Contact: Dr Helen Walker

DOI: 10.5286/ISIS.E.RB1820446

ISIS Experiment Number: RB1820446

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Dr Josie Auckett et al; (2018): Towards intermediate temperature diffusion: oxygen dynamics in Ce(Nb,V)O4+d, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820446

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