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

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

doi:10.1088/0953-8984/18/48/024

Unusual pressure response of the E_2g mode and elastic shear modulus C₄₄ in hcp scandium

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

Institute for Planetary Materials

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

Scandium (Sc) was studied by Raman spectroscopy to pressures up to 20GPa. The E_2g 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 language	English
Article number	024
Pages (from-to)	10971-10976
Number of pages	6
Journal	Journal of Physics Condensed Matter
Volume	18
Issue number	48
DOIs	https://doi.org/10.1088/0953-8984/18/48/024
Publication status	Published - Dec 6 2006

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ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Cite this

Olijnyk, H., Nakano, S., Jephcoat, A. P., & Takemura, K. (2006). Unusual pressure response of the E_2g mode and elastic shear modulus C₄₄ in hcp scandium. Journal of Physics Condensed Matter, 18(48), 10971-10976. [024]. https://doi.org/10.1088/0953-8984/18/48/024

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10.1088/0953-8984/18/48/024