From strong to fragile glass-forming systems: A temperature modulated differential scanning calorimetry investigation

被引：23

作者：

Carpentier, L ^{[1
]}

Desprez, S ^{[1
]}

Descamps, M ^{[1
]}

机构：

[1] Univ Lille 1, Lab Dynam & Struct Materiaux Moleculaires, CNRS, UMR 8024,ERT 1018, F-59655 Villeneuve Dascq, France

来源：

PHASE TRANSITIONS | 2003年 / 76卷 / 9-10期

关键词：

TMDSC; fragility; coherency; dielectric;

D O I：

10.1080/01411590310001603708

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The capacity of temperature modulated differential scanning calorimetry (TMDSC) technique to determine dynamical parameters is tested on several glass-formers of different fragility. We show that both the fragility index in and the stretching exponent beta deduced from TMDSC are consistent with results from other spectroscopic analyses. In particular, we are interested in the coherency and complementarity with the dielectric measurements. When the dielectric analysis is prevented by conductivity effects or when the molecules are non-polar, TMDSC appears as a very powerful tool to study low frequency relaxation.

引用

页码：787 / 799

页数：13

共 42 条

[1] Entropy and fragility in supercooling liquids [J].