On optical phonons and elasticity in the hcp transition metals Fe, Ru and Re at high pressure

H. Olijnyk, A. P. Jephcoat, K. Refson

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The frequencies of the transverse-optical Γ-point phonon were determined for the hexagonal transit-ion metals Fe, Ru and Re by high-pressure Raman spectroscopy up to 60 GPa. 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.

Original languageEnglish
Pages (from-to)504-510
Number of pages7
JournalEurophysics Letters
Issue number4
Publication statusPublished - Feb 11 2001


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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