Thermodynamic properties of amorphous solids: The electrochemical approach

Floppy Mode Degeneracy and Decoupling of Constraint Predictions in Super-Cooled Borate and Silicate Liquids

“…Thus, plotting K (x)exp(C(x)/T g (x)) as a function of 1/S c (T g (x),x) should yield a straight line passing through the origin with a constant, positive slope of B(x) for all glasses of the same "family." Analyzing the available thermodynamic and viscosity data for xNa 2 O · (1−x)SiO 2 glasses (Knoche et al, 1994;Toplis, 2001) resulted in the graph in Figure 6, where one can see that even though B(x) appears to be constant for x ≥ 0.25, it increases as the glass compositions get richer in silica. The observed change in the behavior of B(x) at x ≈ 0.2 is consistent with the glass network transitioning from stressed-rigid to floppy.…”

“…where η ∞ (x) is the viscosity of the liquid at infinite temperature, B(x) corresponds to the energy barrier, which opposes the rearrangement of the melt structural units (Russell et al, 2003) and S c (T,x) is the configurational entropy of the melt. The configurational entropy can, in principle, be determined from calorimetric (Richet et al, 1993) or electrochemical measurements (Jordanov et al, 2012) and is calculated from Eqs 2-4 (Richet, 1984(Richet, , 2009Richet et al, 1993).…”

Medium‐range order and physical properties of Cu–20at.% Sb melts

“…Sb based alloys attracted much attention due to their wide applications, such as for semiconductor preparing [1,2], as thermoelectric materials [3,4]. Recently, Cu-Sb alloys drew a lot of technological and scientific interests for synthesis of new type materials.…”