Polymorphous-Crystalloid Nature Of Glass-Forming Process And Diversiform Crystallisation Of Some Simple Glass-Forming Substances

According to the concept of polymeric polymorphous-crystalloid structure of glass, the processes of glass formation and relaxation of glass forming liquid and glass representing individual chemical substance are the processes of generation, inter transformation and co-polymerisation of structural fragments of various crystalline polymorphous modifications (PM) of this individual substance without long-range order. The notion "crystalloid" is connected with the notion "intermediate-range (medium) order (IRO)" of atom arrangements in glass and crystalline substance. The IRO is a stereometrically defined composition of short-range orders in the crystalloid borders which is characterised by parameters of these SRO and dihedral angles peculiar to the PM which the given crystalloid belongs to.