Observation of Oxygen Frenkel Disorder in Uranium Dioxide above 2000 K by Use of Neutron-Scattering Techniques

Kurt Nørgaard Clausen, W. Hayes, J E. Macdonald, R. Osborn, M. T. Hutchings

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Diffraction and coherent diffuse quasielastic scattering of neutrons have been used to investigate Frenkel disorder of the oxygen sublattice in single crystals of stoichiometric UO2. Measurements were made up to 2900 K using a special high-temperature furnace. The results provide the first direct evidence for the occurrence of Frenkel disorder in UO2 and enable estimates of the defect concentration and activation energy to be made.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume52
    Issue number14
    Pages (from-to)1238-1241
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1984

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