Fig. 4: Change of kinetics with bond indicators.
From: The potential of chemical bonding to design crystallization and vitrification kinetics
Dependence of the minimum crystallization time τ (a) and the reduced onset temperature Tro for glass formation (b) upon two chemical bond quantifiers, the number of electrons transferred and shared between adjacent atoms. A pronounced decrease of the minimum time to crystallize and the glass-forming ability is observed in the metavalent bonding region (green background) between covalent (red) and metallic bonding. Figure 4a, in conjunction with Fig. 2a, shows that the crystallization time τ is clearly correlated with the number of electrons shared. For the Se-rich compounds, which are covalently bonded such as GeSe, crystallization is not even discernible in the optical tester.
