ISIS Neutron and Muon Source Data Journal

Neutron diffraction study of local and mesoscopic disorder induced by La and Yb double doping in Ce1-x-yLaxYbyO2-(x+y)/2, using PDF Analysis

Abstract: The accurate determination of the defect structure of rare earth (RE) doped ceria solid electrolytes is fundamental for the comprehension of oxygen diffusion and charge transport within these materials. The mismatch between Ce4+ and RE3+ ionic radii is supposed to favour the oxygen vacancies and dopant ions clustering limiting the oxygen mobility. To minimize this effect it has been proposed to vary the ?average? ionic radius of RE by a mixture of large and small cation like e.g. La3+ and Yb3+.The aim of the experiment is to clarify the compositional evolution of defect clustering and the oxygen vacancies ordering in RE double-doped ceria. We propose to investigate the Ce1-x-yLaxYbyO2-(x+y)/2 solid solutions by means of PDF technique because it allows to unveil both the local (within few Å) and the mesoscopic (within few nm) disorder induced by doping in these solid solution.

Principal Investigator: Dr Marco Scavini
Local Contact: Professor David Keen
Experimenter: Dr Michela Brunelli
Experimenter: Dr Matthew Tucker
Experimenter: Mr Stefano Checchia
Experimenter: Dr Mauro Coduri

DOI: 10.5286/ISIS.E.RB1520229

ISIS Experiment Number: RB1520229

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 Marco Scavini et al; (2015): Neutron diffraction study of local and mesoscopic disorder induced by La and Yb double doping in Ce1-x-yLaxYbyO2-(x+y)/2, using PDF Analysis, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520229

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