On the glass-forming ability and short-range bond ordering of liquids

The problem discussed is the relation between the glass-forming ability and short-range bond ordering of liquids, leading to the locally favored structures. Short-range bond ordering temperature was assumed to be equal to TA, which is the temperature of transition from an Arrhenius-like to a non-Arrhenius behavior for the α-relaxation time dependence on temperature. For a number of substances, it was shown that T A / T m ⩾ 1.05 for good glass-formers and T A / T m ⩽ 1.02 for poor glass-formers, where Tm is melting temperature. An interpretation of this finding is proposed.