VIBRATIONAL BEHAVIOR OF AMORPHOUS AND CRYSTALLINE ETHYLBENZENE

被引：13

作者：

FRICK, B

WILLIAMS, J

TREVINO, S

ERWIN, R

机构：

[1] NIST,DIV REACTOR RADIAT,GAITHERSBURG,MD 20899

[2] US ARDIC,PICATINNY ARSENAL,NJ 07806

来源：

PHYSICA B | 1995年 / 213卷

关键词：

D O I：

10.1016/0921-4526(95)00194-E

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Neutron triple-axis and time-of-flight experiments on ethylbenzene are presented. We have investigated selectively deuterated, amorphous and crystalline ethylbenzene in the frequency range up to 100 meV. Whereas vibrational excitations above 50 meV are not influenced by the local disorder, we find clear changes for the methyl group libration mode and other side-chain librations. The most pronounced feature is the presence of the Boson peak in the amorphous sample below 5 meV, which cannot be explained by a broadening of modes.

引用

页码：506 / 509

页数：4

共 4 条

[1] NEUTRON AND RAMAN-SCATTERING STUDIES OF THE METHYL DYNAMICS IN SOLID TOLUENE AND NITROMETHANE [J].