Pressure dependence of the Boson peak in poly(butadiene)

被引：10

作者：

Frick, B

Alba-Simionesco, C

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[2] Univ Paris 11, Chim Phys Lab, UMR 8000, F-91405 Orsay, France

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2002年 / 74卷 / Suppl 1期

关键词：

D O I：

10.1007/s003390201628

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Variation of pressure and temperature in inelastic neutron scattering experiments allows us to separate density and thermal energy contributions. We summarise briefly the influence of pressure and temperature on the dynamic scattering law of the polymer glass former poly(butadiene) far below the glass transition. We also show the advantage of using a liquid-niobium pressure cell in such studies. The effect of pressure on the boson peak is to shift the peak towards higher energies and to reduce the low-frequency modes more strongly below the boson-peak maximum than above. A decrease in the Debye-Waller factor with increasing pressure is observed.

引用

页码：S549 / S551

页数：3

共 9 条

[1] An analysis of the short and intermediate range order in several organic glass-forming liquids from the static structure factor under pressure [J].