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Complex structural rearrangements in As-Se glasses
Autoři: Golovchak R | Oelgoetz J. | Vlček Miroslav | Esposito A. | Saiter A. | Saiter J. -M. | Jain H.
Rok: 2014
Druh publikace: článek v odborném periodiku
Název zdroje: Journal of Chemical Physics
Název nakladatele: American Institute of Physics
Místo vydání: Melville
Strana od-do: "054505-1"-"054505-8"
Tituly:
Jazyk Název Abstrakt Klíčová slova
cze Complex structural rearrangements in As-Se glasses Structural relaxation of As-Se glasses through the glass-to-supercooled liquid transition interval is studied with temperature-modulated differential scanning calorimetry. It is shown that connectivity of glass network and long-term physical ageing change not only the full width at half maximum of the out-of-phase component of complex heat capacity, which is conventionally used for analysis, but also its asymmetry value. The latter is shown to carry very important information on the dynamic heterogeneity in glasses. Raman spectroscopy is used as complementary technique to reveal possible structural rearrangements in the investigated glass network. (C) 2014 AIP Publishing LLC.
eng Complex structural rearrangements in As-Se glasses Structural relaxation of As-Se glasses through the glass-to-supercooled liquid transition interval is studied with temperature-modulated differential scanning calorimetry. It is shown that connectivity of glass network and long-term physical ageing change not only the full width at half maximum of the out-of-phase component of complex heat capacity, which is conventionally used for analysis, but also its asymmetry value. The latter is shown to carry very important information on the dynamic heterogeneity in glasses. Raman spectroscopy is used as complementary technique to reveal possible structural rearrangements in the investigated glass network. (C) 2014 AIP Publishing LLC. effective core potentials; molecular calculations; supercooled liquids; transition region; relaxation; polymers; nanocomposites; model; state

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