NEUTRON-SCATTERING STUDY OF THE VIBRATION-RELAXATION CROSSOVER IN AMORPHOUS POLYCARBONATES

被引：99

作者：

BUCHENAU, U

SCHONFELD, C

RICHTER, D

KANAYA, T

KAJI, K

WEHRMANN, R

机构：

[1] KYOTO UNIV, CHEM RES INST, UJI, KYOTO 611, JAPAN

[2] BAYER AG, D-47829 KREFELD, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.73.2344

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on neutron scattering observations of the fast picosecond relaxation in two amorphous polycarbonates. Contrary to previous experience, one already observes these fast relaxations far below the glass transition, at temperatures where they cannot be related to the flow process. An explanation in terms of low-barrier structural relaxations is proposed.

引用

页码：2344 / 2347

页数：4

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