Experimental studies of the liquid-glass transition in trimethylheptane

6533b82ffe1ef96bd1295048

RESEARCH PRODUCT

Experimental studies of the liquid-glass transition in trimethylheptane

Herman Z. Cummins Marcel Bertault P. Finkel Sylvie Beaufils Claude Ecolivet Bernard Bonello J. Hernandez Jean Toulouse G. Q. Shen M. Maglione Yoon-hwae Hwang

subject

Quasielastic scattering Materials science Phonon scattering Condensed matter physics Scattering Quasielastic neutron scattering Neutron scattering Biological small-angle scattering Small-angle neutron scattering Inelastic neutron scattering

description

The molecular glass former trimethylheptane was studied by calorimetric, dielectric, ultrasonic, neutron scattering, Brillouin scattering, and depolarized light-scattering techniques. The molecular structure appears to be nearly spherical optically as indicated by the low depolarization ratio and dielectric susceptibility values. A preliminary mode-coupling theory (MCT) analysis of the light-scattering and neutron-scattering data indicates that ${T}_{C}\ensuremath{\gtrsim}150 \mathrm{K},$ at least 25 K above ${T}_{G}.$ The susceptibility minima were analyzed with the MCT interpolation equation, and disagreement between the light and neutron results was observed despite the apparent isotropy of the molecules.

year	journal	country	edition	language
2000-07-01	Physical Review E

https://doi.org/10.1103/physreve.62.783

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