Inelastic Neutron Scattering from Glass Formers
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概要
- 論文の詳細を見る
Neutron spectra below and above the glass transition temperature show a pronounced difference between strong and fragile glass formers in Angell's fragility scheme. The strong anharmonic increase of the inelastic scattering with increasing temperature in fragile substances is absent in the strongest glass former SiO_2. That difference is reflected in the temperature dependence of Brillouin sound velocities above the glass transition. Coherent inelastic neutron scattering data indicate a mixture of sound waves and local modes at the low frequency boson peak. A relation between the fragility and the temperature dependence of the transverse hypersound velocity at the glass temperature is derived.
- 理論物理学刊行会の論文
- 1997-06-27
著者
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Buchenau U.
Institut Fur Festkorperforschung Forschungszentrum Julich
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Buchenau U.
Institut fur Festkorperforschung, Forschungszentrum Julich