| Инд. авторы: | Zykova V.A., Surovtsev N.V. |
| Заглавие: | Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol |
| Библ. ссылка: | Zykova V.A., Surovtsev N.V. Inelastic light scattering study of hydrogen-bonded glass formers: Glycerol and ethanol // Journal of Non-Crystalline Solids. - 2017. - Vol.471. - P.429-434. - ISSN 0022-3093. |
| Внешние системы: | DOI: 10.1016/j.jnoncrysol.2017.06.036; WoS: 000407188100058; |
| Реферат: | eng: Temperature dependences of the structural relaxation time tau(alpha)(T) of two hydrogen-bonded glass formers, glycerol and ethanol, were investigated by depolarized light scattering technique. tau(alpha)(T) of glycerol demonstrates a transition from the Arrhenius law at high temperatures to a non-Arrhenius behavior at T-A similar to 366 K. Combination of derivative analysis results for tau(alpha)(T) from light scattering and dielectric spectroscopes reveals this transition near similar to 200 K in the case of ethanol. The obtained values of T-A are close to the temperatures below which the excess of the Landau-Placzek ratio, associated with the appearance of locally favored structures, was observed earlier.
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| Ключевые слова: | BETA-RELAXATION; MONOHYDROXY ALCOHOLS; HETEROGENEOUS DYNAMICS; ALPHA-RELAXATION; STRUCTURAL GLASS; DIELECTRIC-SPECTROSCOPY; VISCOSITY; SUPERCOOLED LIQUIDS; Fragile behavior; Alpha relaxation; Raman scattering; Glass-forming liquids; FORMING LIQUIDS; TRANSITION; |
| Издано: | 2017 |
| Физ. характеристика: | с.429-434 |