| Issue |
Europhys. Lett.
Volume 53, Number 4, February 2001
|
|
|---|---|---|
| Page(s) | 504 - 510 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00181-4 | |
| Published online | 01 December 2003 | |
On optical phonons and elasticity in the hcp transition
metals 
, 
and 
at high pressure
Department of Earth Sciences, University of Oxford -
Oxford OX1 3PR, UK
Received:
29
September
2000
Accepted:
6
December
2000
The frequencies of the transverse-optical Γ-point phonon
were determined for the hexagonal transition metals ,
and by high-pressure Raman spectroscopy up to
. Comparison is made with available theoretical
frequency-data. The elastic shear constants C44, determined
from the Raman frequencies, are consistent with ultrasonic
low-pressure data and theoretical high-pressure data and do not
support the high-pressure data obtained from lattice-strain
experiments.
PACS: 62.20.Dc – Elasticity, elastic constants / 62.50.+p – High-pressure and shock-wave effects in solids and liquids / 78.30.Er – Solid metals and alloys
© EDP Sciences, 2001
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