Enthalpy relaxation kinetics of GeTe4 glass.

Differential scanning calorimetry was used to study enthalpy relaxation kinetics of the GeTe 4 infrared chalcogenide glass. The relaxation behavior was described in terms of the phenomenological Tool–Narayanaswamy–Moynihan (TNM) and Adam–Gibbs–Scherer (AGS) models. The direct curve-fitting procedure was found to provide the most accurate results under the assumption that high-quality DSC data are obtained and the correct pre-fitting treatment is applied. The recently developed novel evaluation of Δ h ⁎ from CR cycles and the improved simulation-comparative methodology were then found to provide the best results out of the tested non-fitting methods. [ABSTRACT FROM AUTHOR]