Fig. 3: Overview of temperature-dependent vitrification behavior and atomic mobility; and a sketch of FVHD model.
a, b Temperature dependence of the α relaxation time (left axis) and Tf dependence on the inverse of cooling rate (right axis). Error bars are ±2 K in both Tf and the temperature of a given τ. The continuous gray; red and blue lines are VFT fits to τ and qc dependent Tf, respectively, with: D* = 9.8; T0 = 311 K for Au-based MG43; and D* = 7.4; T0 = 426 K for Pt-based MG. The dashed black lines are Arrhenius fits of vitrification kinetics in the low Tf regime. The insets show the inverse of the cooling rate as a function of the equivalent length at the indicated Tf. c Tf depression with respect to the Tf of bulky samples as a function of qc and leq for both investigated glasses. d Schematic representation of the FVHD model where, at a given temperature, a system can be, depending on its size, at equilibrium, vitrifying, or glassy.
