Published May 8, 2017 | Version v1
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Role of low-frequency vibrations on sound propagation in glasses at intermediate temperature

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We report measurements of the temperature dependence of the sound attenuation and the fractional change in sound velocity for the glass (G) and orientational-glass (OG) phases of polymorphic ethanol. Strikingly similar behaviors are found for both phases despite the OG's underlying crystal (bcc) lattice. Such similarity, which is also revealed in dielectric spectroscopy and inelastic neutron scattering measurements, suggests whole molecule small-angle librations as a common microscopic origin for a wide variety of "glassy" phenomena.

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Dirección General de Investigación Científica y Técnica PB95-0075-C03-01

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https://idus.us.es/handle/11441/59421
URN
urn:oai:idus.us.es:11441/59421

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USE