NEUTRON AND LIGHT-SCATTERING STUDY OF SUPERCOOLED GLYCEROL

被引：205

作者：

WUTTKE, J

HERNANDEZ, J

LI, G

CODDENS, G

CUMMINS, HZ

FUJARA, F

PETRY, W

SILLESCU, H

机构：

[1] UNIV MAINZ,INST PHYS CHEM,D-55128 MAINZ,GERMANY

[2] CUNY CITY COLL,NEW YORK,NY 10031

[3] CENS,LAB LEON BRILLOVIN,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.72.3052

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Relaxation dynamics was investigated in the hydrogen-bonded glass former glycerol using incoherent neutron scattering and depolarized light scattering. The neutron data have a q-independent form in the intermediate beta-relaxation regime implying factorization of the q and omega dependences. Similar susceptibility spectra were obtained from both data sets qualitatively resembling the mode coupling theory scenario. Quantitative fits indicate apparent deviations of the exponents from mode coupling theory predictions suggesting that the influence of vibrational modes is severe in network glass formers.

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页码：3052 / 3055

页数：4

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