SELF-SIMILAR LIGHT-SCATTERING SPECTRA OF BETA RELAXATION NEAR THE LIQUID-GLASS TRANSITION

被引：79

作者：

TAO, NJ ^{[1
]}

LI, G ^{[1
]}

CUMMINS, HZ ^{[1
]}

机构：

[1] CUNY CITY COLL,DEPT PHYS,NEW YORK,NY 10031

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.66.1334

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a light-scattering observation of beta-relaxation in [Ca(NO3)2]0.4-(KNO3)0.6 in the vicinity of the liquid-glass transition. The spectra exhibit self-similarity with I(omega) = A/omega-1-a over a spectral range of nearly 3 orders of magnitude in both the liquid and glass phases. This result agrees with predictions of mode-coupling theories of the glass transition. However, the value of alpha is strongly temperature dependent, a result not predicted by the theory. The spectra are strongly depolarized with a depolarization ratio of approximately 0.75.

引用

页码：1334 / 1337

页数：4

共 33 条

[21] NEUTRON SPIN-ECHO STUDY OF DYNAMIC CORRELATIONS NEAR THE LIQUID-GLASS TRANSITION [J].