Liquid-glass transformation as seen in m-TCP by depolarized light scattering

M. Soltwisch, A. Spiroski, A. Kisliuk, A. P. Sokolov, E. Rössler, D. Quitmann

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Abstract

Depolarized light-scattering spectra have been measured for the molecular glass-former m-tricresylphosphate (m-TCP), for which the slow relaxation behaviour was known between Tgand 1·5 Tg. Considering scattering from TA sound waves and from local fluctuations, and using a viscoelastic model, a good description of the spectra is achieved, including the central (quasielastic) line. The quasielastic part is compared with the slow α-relaxation measured by NMR. The damping of the TA modes is much stronger than one expects from α-relaxation only. Connection is made with the fast relaxation seen in low-frequency Raman scattering.

Original languageEnglish
Pages (from-to)683-691
Number of pages9
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume71
Issue number4
DOIs
StatePublished - Apr 1995
Externally publishedYes

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