Communications: High-pressure dielectric scaling study of a monohydroxy alcohol

被引：40

作者：

Reiser, Andreas ^{[1
]}

Kasper, Gernot ^{[1
]}

Gainaru, Catalin ^{[2
]}

Boehmer, Roland ^{[2
]}

机构：

[1] Univ Heidelberg, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany

[2] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2010年 / 132卷 / 18期

关键词：

Debye temperature; dielectric relaxation; organic compounds; vitrification; GLASS-FORMING LIQUIDS; STRUCTURAL RELAXATION; SECONDARY RELAXATIONS; 1-PROPANOL; DYNAMICS; TIME; TRANSITION; DISPERSION; GLYCEROL;

D O I：

10.1063/1.3421555

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Glass forming monohydroxy alcohols show an exponential Debye-type dielectric relaxation, which proceeds slower than the structural relaxation. Dielectric high-pressure measurements of 2-ethyl-1-hexanol reveal that isochronal scaling is violated. Temperature-volume scaling was found to be valid separately for the Debye-type and for the structural relaxation, yielding a scaling exponent of gamma approximate to 1.8. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3421555]

引用

页数：3

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