Light scattering study of the liquid-glass transition in trimethylheptane: depolarized near backscattering study

被引：2

作者：

Hwang, YH ^{[1
]}

Shen, GQ ^{[1
]}

Cummins, HZ ^{[1
]}

机构：

[1] CUNY City Coll, Dept Phys, New York, NY 10031 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 235卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0022-3093(98)00635-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We studied the dynamics of the liquid-glass transition in the molecular glass-former, trimethylheptane (TMH), using depolarized near backscattering spectroscopy (DNBS). We found that in TMH density fluctuations are more important than orientational fluctuations in the depolarized scattered intensity. We carried out a preliminary analysis of the dynamic susceptibility, chi "(omega) in the temperature range 180 to 260 K based on the idealized mode coupling theory (MCT). We estimated the exponent parameter, lambda similar or equal to 0.78, and the crossover temperature T-c similar to 125 R. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：180 / 189

页数：10

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