Role of low-frequency vibrations on sound propagation in glasses at intermediate temperature

被引：22

作者：

Criado, A

Jiménez-Ruiz, M

Cabrillo, C

Bermejo, FJ

Grimsditch, M

Fischer, HE

Bennington, SM

Eccleston, RS

机构：

[1] CSIC, E-28006 Madrid, Spain

[2] Univ Sevilla, Dept Fis Mat Condensada, E-41080 Seville, Spain

[3] Argonne Natl Lab, Argonne, IL 60439 USA

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[5] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.61.8778

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：8778 / 8783

页数：6

共 31 条

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