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- W2040677054 abstract "According to the structural study of the icosahedral quasicrystal and glassy Al77Cu13V10, it has been shown that these two materials have the same nanoscale structure unit, namely, the icosahedral atomic cluster. However, the glassy material has a dense random-packing structure which is composed of the icosahedral atomic clusters, without any long-range orientational ordering. Therefore, the icosahedral quasicrystal and glassy Al77Cu13V10 are interesting samples for studying the dynamical properties of disordered materials. We have measured the dynamical structure factors S(Q,ω) of icosahedral and glassy Al77Cu13V10, and the crystallized sample at room temperature by means of inelastic neutron scattering. Measurements were performed on the inverted geometry crystal-analyzer type time-of-flight spectrometers LAM-40, which is installed at KENS. The generalized vibrational density of states G(ω) were also obtained. The low-energy excitation modes in icosahedral and glassy Al77Cu13V10 were observed in the energy range below 8 meV. In contrast to the significant difference observed in the static structure factors S(Q) of icosahedral and glassy Al77Cu13V10, their dynamical properties are nearly identical and quite different from that of the crystallized sample." @default.
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- W2040677054 date "1995-08-01" @default.
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- W2040677054 title "Dynamical properties of icosahedral quasicrystal and glassy Al77Cu13V10: A comparative study by inelastic neutron scattering" @default.
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- W2040677054 doi "https://doi.org/10.1016/0921-4526(95)00215-u" @default.
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