Enthalpy space analysis of the evolution of the primary relaxation time in ultraslowing systems

J C Martinez Garcia; J Ll Tamarit; S J Rzoska

doi:10.1063/1.3514589

Enthalpy space analysis of the evolution of the primary relaxation time in ultraslowing systems

J Chem Phys. 2011 Jan 14;134(2):024512. doi: 10.1063/1.3514589.

Authors

J C Martinez Garcia¹, J Ll Tamarit, S J Rzoska

Affiliation

¹ Grup de Caracterització de Materials, Departament de Física i Enginyeria Nuclear, ETSEIB, Universitat Politècnica de Catalunya, Diagonal 647, Barcelona 08028, Catalonia, Spain.

PMID: 21241125
DOI: 10.1063/1.3514589

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.