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Title: Propagating vibrational modes in the Zr-Be metallic glasses
Authors: Syrykh, GF
Ivanov, AS
Klimenko, NA
Lisichkin, YV
Mutka, H
Stride, JA
Keywords: Metallic glasses
Vibrational states
Inelastic scattering
Energy transfer
Issue Date: 12-Mar-2008
Publisher: Institute of Physics
Citation: Syrykh, G. F., Ivanov, A. S., Klimenko, N. A., Lisichkin, Y. V., Mutka, H., & Stride, J. A. (2008). Propagating vibrational modes in the Zr-Be metallic glasses. Journal of Physics-Condensed Matter, 20(10), 104241. doi:10.1088/0953-8984/20/10/104241
Abstract: The dynamic structure factors, S(Q, E), for the Zr70Be30, Zr60Be40 and Zr50Be50 metallic glasses have been measured using neutron inelastic scattering on the IN4 spectrometer (ILL, Grenoble, France), over the range of momentum transfers 0.7 < h Q (angstrom(-1)) < 7 and energy transfers 2 < E (meV) < 60. The constant- Q cuts through the dynamic structure factor and longitudinal current correlation function, J(l) ( Q, E), were obtained. The dispersion relations for two representations, S( Q, E) and J(l) (Q, E), were derived by fitting a Gaussian to the peaks. The specific low-energy modes (similar to 5 meV) as well as 'acoustic-phonon like' (similar to 16 meV) and 'optic-phonon like' excitations (similar to 47 meV) were observed in these metallic glasses with disparate mass and ionic radius components. © 2008, Institute of Physics
Gov't Doc #: 1430
ISSN: 0953-8984
Appears in Collections:Journal Articles

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