Lattice dynamics of terbium

Jens Christian Gylden Houmann, R.M. Nicklow

    Research output: Contribution to journalJournal articleResearchpeer-review


    The frequency-wave-vector dispersion relation for the normal modes of vibration of terbium at room temperature has been measured by means of slow-neutron inelastic scattering techniques. The triple-axis spectrometer at the Oak Ridge high flux isotope reactor was used, mostly in the constant-Q mode of operation. Phonon frequencies for wave vectors along the principal symmetry directions have been determined and, in addition, measurements of phonon frequencies along the boundaries of the Brillouin zone and along a more general direction are reported. The data have been fitted with a Born- von Karman force model which includes interactions out to the eighth nearest neighbour
    Original languageEnglish
    JournalPhysical Review B (Solid State)
    Issue number10
    Pages (from-to)3943-3952
    Publication statusPublished - 1970


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