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

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

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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
Volume18
Issue number48
DOIs
Publication statusPublished - Dec 6 2006

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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