Glass formation and local topological instability of atomic structure

摘要

A direct connection between the local topology of the atomic structure of liquids and glasses and thermodynamic quantities through the atomic level stresses is suggested for metallic alloys. In particular the role of local topological instability in the phase transformations involving liquid and glass will be discussed. It is pointed out that a single local geometrical criterion can explain various phase trasformations, such as melting, glass transition, and glass formation by solid state reaction and liqudi quenching.