COMPARISON OF RAMAN- AND NEUTRON-SCATTERING DATA FOR GLASS-FORMING SYSTEMS

被引：144

作者：

SOKOLOV, AP

BUCHENAU, U

STEFFEN, W

FRICK, B

WISCHNEWSKI, A

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY

[2] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE

[3] RUSSIAN ACAD SCI, INST AUTOMAT & ELECTROMETRY, NOVOSIBIRSK 630090, RUSSIA

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.52.R9815

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-frequency Raman- and neutron-scattering spectra are compared for the three glass formers polybutadiene, polystyrene, and SiO2 at different temperatures. One finds similar neutron and Raman spectra in the frequency range where the quasielastic (relaxational) contribution dominates, but a marked quasilinear increase of the light-scattering sensitivity above the vibrational boson peak. Analysis of the data shows that there is some intrinsic relation between the quasielastic contribution and the boson peak vibrations. These results are compared with predictions of different models.

引用

页码：R9815 / R9818

页数：4

共 18 条

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