Lattice dynamics of the lanthanides: Samarium at high pressure

H. Olijnyk, A. P. Jephcoat

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Sm was studied by Raman spectroscopy at pressures up to 20 GPa. The Raman-active phonon modes, both of the Sm-type phase and the dhcp phase, show a frequency decrease as pressure increases. There is evidence that the entire structural sequence hep → Sm-type → dhcp → fcc under pressure for the individual regular lanthanides is associated with softening of certain acoustic and optical-phonon modes as well as elastic anomalies. Comparison is made to corresponding transitions between close-packed lattices in other metals and possible relations to the lanthanide's electronic structure are addressed.

    Original languageEnglish
    Pages (from-to)385-389
    Number of pages5
    JournalEurophysics Letters
    Issue number3
    Publication statusPublished - Feb 1 2005

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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