A study of the Debye-Stokes-Einstein law in supercooled fluids

被引：39

作者：

Andreozzi, L

DiSchino, A

Giordano, M

Leporini, D

机构：

[1] Dipto. di Fisica dell'Universita', I-56126 Pisa

[2] INFM UdR, Pisa

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1996年 / 8卷 / 47期

关键词：

D O I：

10.1088/0953-8984/8/47/070

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The reorientation of a nearly spherical paramagnetic tracer dissolved in supercooled o-terphenyl is studied by electron spin resonance in the range 200 K < T < 370 K. For T > 300 K the rotational correlation time tau(2) follows the Debye-Stokes-Einstein law. On decreasing the temperature, the rotational motion of the probe and the viscosity eta decouple. In particular, in the region around T = 290 K it is found that tau(2) proportional to (eta/T)xi with xi = 0.28 +/- 0.04.

引用

页码：9605 / 9608

页数：4

共 14 条

[1] Jump reorientation of a molecular probe in the glass transition region of o-terphenyl [J].