R. Golovchak, A. Kozdras, O. Shpotyuk, S. Kozyukhin, J.-M. Saiter.
Journal of Materials Science, vol. 44, 2009, p. 3962–3967.
Effect of long-term physical ageing (~18–21 years) in vitreous germanium selenides is studied using differential scanning calorimetry method. It is compared with short-term physical ageing observed in these glasses earlier. Low compositional limit of the non-ageing ability determined using old samples coincides with the onset of reversibility window obtained using short-term aged samples of Ge–Se system by temperature modulated differential scanning calorimetry technique.