Connecting structure and dynamics in glass forming materials by photon correlation spectroscopy

被引：24

作者：

Sidebottom, D. L. ^{[1
]}

Rodenburg, B. V. ^{[1
]}

Changstrom, J. R. ^{[1
]}

机构：

[1] Creighton Univ, Dept Phys, Omaha, NE 68178 USA

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 13期

关键词：

LIGHT-SCATTERING; BRILLOUIN-SCATTERING; SUPERCOOLED LIQUIDS; RELAXATION; TRANSITION; FRAGILITY; CAKNO3; TIME;

D O I：

10.1103/PhysRevB.75.132201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report photon correlation spectroscopy measurements of the alpha-relaxation in a series of glass forming liquids of widely varying fragility and demonstrate a correlation between the nonergodic level of the liquid and its fragility. This correlation, when combined with a previous correlation established between fragility and the stretching exponent that characterizes the nonexponentiality of the alpha-relaxation, implies that the alpha-relaxation should, in general, conform to scaling that is described by just two parameters: the nonergodic level and the glass transition temperature.

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页数：4

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