On the isothermal pressure behaviour of the relaxation times for supercooled glass-forming liquids

被引：60

作者：

Paluch, M ^{[1
]}

Rzoska, SJ ^{[1
]}

Habdas, P ^{[1
]}

Ziolo, J ^{[1
]}

机构：

[1] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 19期

关键词：

D O I：

10.1088/0953-8984/10/19/001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

This paper discusses the isothermal pressure behaviour of the relaxation times for supercooled glass-forming liquids. Analysis based on reference data and the authors' measurements of dielectric relaxation is carried out for both strong and fragile glass formers. All of the experimental relaxation times clearly exhibit a non-Arrhenius behaviour well reproduced by a function tau = tau(0p) exp(CpP/(P-0 - P)) or tau = tau(0) exp(CP0/(P-0 - P)), giving the same estimates of the ideal glass transition pressure P-0. Experimental data indicate that fragile materials show a more rapid increase of the relaxation time with rise of pressure than the strong ones.

引用

页码：4131 / 4138

页数：8

共 38 条

[1] ISOTHERMAL-ISOBARIC COMPUTER-SIMULATION OF THE SUPERCOOLED-LIQUID-GLASS TRANSITION REGION - IS THE SHORT-RANGE ORDER IN THE AMORPHOUS SOLID FCC [J].