Lattice dynamics of the lanthanides

Samarium at high pressure

H. Olijnyk, A. P. Jephcoat

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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
Volume69
Issue number3
DOIs
Publication statusPublished - Feb 2005
Externally publishedYes

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samarium
close packed lattices
softening
Raman spectroscopy
anomalies
electronic structure
acoustics
metals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Lattice dynamics of the lanthanides : Samarium at high pressure. / Olijnyk, H.; Jephcoat, A. P.

In: Europhysics Letters, Vol. 69, No. 3, 02.2005, p. 385-389.

Research output: Contribution to journalArticle

Olijnyk, H. ; Jephcoat, A. P. / Lattice dynamics of the lanthanides : Samarium at high pressure. In: Europhysics Letters. 2005 ; Vol. 69, No. 3. pp. 385-389.
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