ISIS Neutron and Muon Source Data Journal

Defect structure of oxygen-deficient Yb2Zr2O6.5

Abstract: Ytterbium zirconate is of fundamental interest as a model frustrated magnet, and of potential technological importance as a thermal barrier material. In both cases oxygen vacancies are known to play a central role in determining physical properties. We have grown a large single crystal of oxygen- deficient Yb2Zr2O6.5 and we propose to determine its defect structure using diffuse neutron scattering on SXD. The sample adopts the fluorite structure and this opens up the possibility to study magnetic frustration on the FCC lattice. Furthermore the thermal conductivity is known to be anomalously low compared to predictions for random, isolated oxygen vacancies. We shall determine the nature of the oxygen defects in order to assess their role in suppressing the thermal conductivity, and the migration of oxygen at elevated operating temperatures.

Principal Investigator: Professor Jon Goff
Experimenter: Dr Keith Refson
Experimenter: Professor Andrew Boothroyd
Experimenter: Dr Dharmalingan Prabhakaran
Experimenter: Dr David Voneshen
Local Contact: Dr Matthias Gutmann

DOI: 10.5286/ISIS.E.RB1910468

ISIS Experiment Number: RB1910468

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 Jon Goff et al; (2019): Defect structure of oxygen-deficient Yb2Zr2O6.5, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910468

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