BETA-PROCESS OF SUPERCOOLED ORTHO-TERPHENYL - A COMPARISON OF DIELECTRICAL AND NMR DATA GUIDED BY MODE-COUPLING THEORY

被引：24

作者：

ROSSLER, E ^{[1
]}

SCHNAUSS, W ^{[1
]}

机构：

[1] UNIV MAINZ,INST PHYS CHEM,W-6500 MAINZ,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1990年 / 170卷 / 04期

关键词：

D O I：

10.1016/S0009-2614(90)87025-M

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：

According to predictions of mode-coupling theory of the liquid-glass transition, a Cole-Cole dynamical susceptibility is applied to the β-relaxation of supercooled o-terphenyl as studied by 2H NMR spin-lattice relaxation and by dielectrical relaxation. A temperature-dependent amplitude (1-f) is assumed for the β-process which yields a description of the NMR data consistent with the dielectrical data. The plateau value f separating the α- and β-processes in the two-step correlation function reveals a similar temperature dependence as compared to the Debye-Waller factor. © 1990.

引用

页码：315 / 320

页数：6

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