Unusual pressure response of the E2g mode and elastic shear modulus C44 in hcp scandium

H. Olijnyk, S. Nakano, A. P. Jephcoat, K. Takemura

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    11 Citations (Scopus)


    Scandium (Sc) was studied by Raman spectroscopy to pressures up to 20GPa. The E2g mode frequency increases throughout the stability field of the hexagonal-close-packed (hcp) phase, which contrasts the softening of this mode observed in its heavier homologue Y and the related regular lanthanides. The unusually low mode Grüneisen parameter and the small increase of elastic modulus C44 are discussed with respect to pressure-induced changes of the electronic structure.

    Original languageEnglish
    Article number024
    Pages (from-to)10971-10976
    Number of pages6
    JournalJournal of Physics Condensed Matter
    Issue number48
    Publication statusPublished - Dec 6 2006

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics


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