Nonexponential primary relaxation in supercooled salol

被引：8

作者：

Diezemann, G ^{[1
]}

Nelson, K ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 20期

关键词：

D O I：

10.1021/jp983897j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The nonexponential relaxation in supercooled salol near the calorimetric glass transition temperature is analyzed in terms of a free-energy model for the primary relaxation in glass-forming liquids. In comparing the results from impulsive stimulated thermal scattering and dielectric data, we estimate the mean angle of reorientational fluctuations in the supercooled liquid for a temperature range located between the glass transition temperature and the critical temperature of mode coupling analyses on salol. The mean reorientational jump angle is estimated to increase smoothly from about 20 degrees to 50 degrees with increasing temperature in the considered range. These values are in qualitative accord to what was found in other supercooled liquids in a similar range before.

引用

页码：4089 / 4096

页数：8

共 40 条

[1] DEPOLARIZED RAYLEIGH-SCATTERING AND ORIENTATIONAL RELAXATION OF MOLECULES IN SOLUTION .2. CHLOROFORM AND NITROBENZENE [J].