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

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

doi:10.1209/epl/i2001-00181-4

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

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

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	504-510
Number of pages	7
Journal	Europhysics Letters
Volume	53
Issue number	4
DOIs	https://doi.org/10.1209/epl/i2001-00181-4
Publication status	Published - Feb 11 2001

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1209/epl/i2001-00181-4

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abstract = "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.",

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AU - Jephcoat, A. P.

AU - Refson, K.

PY - 2001/2/11

Y1 - 2001/2/11

N2 - 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.

AB - 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.

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JF - Europhysics Letters

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

Abstract

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