Dynamical structure factor and frequency distribution of the metallic glass Cu46Zr54at room temperature
- 20 March 1980
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 13 (8) , L167-L172
- https://doi.org/10.1088/0022-3719/13/8/006
Abstract
The dynamical structure factor of glassy Cu46Zr54 has been measured at room temperature, for momentum transfers between 1 and 8 AA-1 and energies (h(cross) omega =E0-E) between -45 and 45 meV, using neutron inelastic scattering. From the measured time-of-flight spectra a generalised frequency distribution has been determined. The experiment was repeated after crystallisation of the sample. The results show a strong increase of low-frequency modes in the amorphous sample compared with the polycrystal, and the frequency distribution of the metallic glass shows a slope approximately omega 4/3 between 4.7 and 7 meV, where the frequency distribution of the polycrystalline sample still shows a Debye type of spectrum.Keywords
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