ANOMALIES IN THE SCALING OF THE DIELECTRIC ALPHA-RELAXATION

被引：208

作者：

SCHONHALS, A ^{[1
]}

KREMER, F ^{[1
]}

HOFMANN, A ^{[1
]}

FISCHER, EW ^{[1
]}

SCHLOSSER, E ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES, W-6500 MAINZ, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.70.3459

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By measuring the complex dielectric function over 15 decades in frequency we evaluate the scaling of the alpha-relaxation for several glass-forming liquids including propylene carbonate. The temperature dependence of the mean relaxation time and of the relaxation strength of the relaxation function displays two dynamical regions being separated by a crossover temperature. The observed findings are essentially not in accordance with predictions of the mode-coupling theory and light scattering results for propylene carbonate [M. Elmroth et al., Phys. Rev. Lett. 68, 79 (1992)].

引用

页码：3459 / 3462

页数：4

共 31 条

[1] ON TEMPERATURE DEPENDENCE OF COOPERATIVE RELAXATION PROPERTIES IN GLASS-FORMING LIQUIDS [J].