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Phonon dispersion in a metallic glass
Analytical expressions for the dispersion of the longitudinal and transverse phonons are obtained for a two-component metallic glass employing a self-consistent phonon theory for amorphous solids as developed by Takeno et al . The effective pair potential used for the computation of the eigenfrequen...
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Published in: | Physical review. B, Condensed matter Condensed matter, 1988-10, Vol.38 (12), p.8093-8096 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Analytical expressions for the dispersion of the longitudinal and transverse phonons are obtained for a two-component metallic glass employing a self-consistent phonon theory for amorphous solids as developed by Takeno et al . The effective pair potential used for the computation of the eigenfrequencies of the longitudinal and transverse phonons in Ca sub 70 Mg sub 30 glass is obtained by making use of the Ashcroft pseudopotential for the pure components. Eigenfrequency expressions reproduce the main characteristic features of the dispersion curves obtained by neutron scattering and computer simulation techniques, both for the longitudinal and transverse phonons. The results of the present computations are in good agreement with the available experimental data. 15 ref.--AA |
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ISSN: | 0163-1829 1095-3795 |
DOI: | 10.1103/PhysRevB.38.8093 |