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 2005 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Lattice dynamics of the lanthanides
T2 - Samarium at high pressure
AU - Olijnyk, H.
AU - Jephcoat, A. P.
PY - 2005/2
Y1 - 2005/2
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=13444292322&partnerID=8YFLogxK
U2 - 10.1209/epl/i2004-10354-7
DO - 10.1209/epl/i2004-10354-7
M3 - Article
VL - 69
SP - 385
EP - 389
JO - Europhysics Letters
JF - Europhysics Letters
SN - 0295-5075
IS - 3
ER -