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 language | English |
|---|---|
| Pages (from-to) | 385-389 |
| Number of pages | 5 |
| Journal | Europhysics Letters |
| Volume | 69 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Feb 1 2005 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Olijnyk, H., & Jephcoat, A. P. (2005). Lattice dynamics of the lanthanides: Samarium at high pressure. Europhysics Letters, 69(3), 385-389. https://doi.org/10.1209/epl/i2004-10354-7