학술논문
Enthalpy space analysis of the evolution of the primary relaxation time in ultraslowing systems.
Document Type
Article
Source
Subject
*ENTHALPY
*MOLECULAR dynamics
*TEMPERATURE effect
*ARRHENIUS equation
*GLASS
*EMPIRICAL research
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Language
ISSN
0021-9606
Abstract
For decades the Vogel-Fulcher-Tammann equation has dominated the description of dynamics of the non-Arrhenius behavior in glass forming systems. Recently, this dominance has been questioned. Hecksher et al. [Nat. Phys. 4, 737 (2008)], Elmatad et al. [J. Phys. Chem. B 113, 5563 (2009)], and Mauro et al. [Proc. Natl. Acad. Sci. U.S.A. 106, 19780 (2009)] indicated superiority of several equations showing no divergence at a finite (nonzero) temperature. This paper shows distortion-sensitive and derivative based empirical analysis of the validity of leading equations for portraying the previtreous evolution of primary relaxation time. [ABSTRACT FROM AUTHOR]