MODE-COUPLING AND PHENOMENOLOGICAL ANALYSIS OF THE DEPOLARIZED LIGHT-SCATTERING SPECTRA OF ORTHO-TERPHENYL

被引：40

作者：

PATKOWSKI, A ^{[1
]}

STEFFEN, W ^{[1
]}

MEIER, G ^{[1
]}

FISCHER, EW ^{[1
]}

机构：

[1] ADAM MICKIEWICZ UNIV POZNAN, INST PHYS, POZNAN, POLAND

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 172卷

关键词：

D O I：

10.1016/0022-3093(94)90416-2

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：

The depolarized dynamic light scattering spectra of ortho-terphenyl covering a broad frequency range from 10(-2) to 6 x 10(12) Hz have been analyzed using both the mode coupling theory (MCT) and the phenomenological approach. Similarities and differences of these two approaches as well as the frequency range and the quality of the fits to the experimental data are discussed. The main differences between these two models occur only in the intermediate frequency range (0.1-100 GHz) where either the MCT beta-relaxation with a scaling time diverging on both sides of T-c or a 'fast' process of a constant relaxation time can be used to fit the data.

引用

页码：52 / 60

页数：9

共 27 条

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