Quasielastic Diffuse Neutron Scattering from Fluorites in the Fast Ion Phase

K. Clausen, W. Hayes, M.T Hutchings, Jørgen Kjems, P Schnabel, C. Smith

    Research output: Contribution to journalJournal articlepeer-review

    Abstract

    Quasielastic diffuse coherent neutron scattering arising from the dynamically disordered anions in CaF2 and PbF2 has been investigated as the temperature is increased into the fast ion phase. The characteristic variation with scattering vector Image of the integrated intensity, S(Image ), can be accounted for by a model in which the most probable instantaneous configuration of the defective anions is a cluster centered at the mid-point of nearest-neighbour regular anion sites. The observed S(Image ,ω) is Lorentzian in ω and the width has a marked increase with temperature.
    Original languageEnglish
    JournalSolid State Ionics
    Volume5
    Pages (from-to)589-592
    ISSN0167-2738
    DOIs
    Publication statusPublished - 1981

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