Specific heats Cp, Cv, Cconf and energy landscapes of glassforming liquids

摘要: In pursuit of understanding the paradoxical success Adam–Gibbs equation in both experiment and computer simulation studies, we examine relation between liquid behavior at constant pressure volume compare inherent structures excitation profiles for two cases. This allows us to extend qualitatively recent correlation kinetic thermodynamic measures fragility systems. The decreased is understood terms Cp > CcðcpÞ CcðcvÞ Cv. process, find a parallel range volumes, relative total excess volume, that are explored first few orders magnitude relaxation time increase, amorphous state structure energies, range, ergodic simulations, which also cover only this limited change. interesting question whether or not fragile determined configurational vibrational manifold states left unanswered work. However, approximate proportionality entropies needed interpret (which has been questioned by other authors) confirmed within limits, using data from three different types investigation: experiments (on Se), (of water SPC-E model), analytical models defect crystals configurationally excited liquids. Some consequences abrupt increases heat capacity Tg implied proportionality, discussed. 2002 Elsevier Science B.V. All rights reserved.