Short-range order in liquids and amorphous solids

Using the method of molecular dynamics, we simulated the transition of a system of argon particles from a liquid to an amorphous state using two methods: the method of melt-quench, which is characteristic for description of the natural process of forming glassy and amorphous solids, and the method of the imposition of a local field, conditioned by limiting the mobility of particles by quasi-elastic forces in amorphous state. The process of amorphization was controlled by splitting the second maximum of the radial distribution function of particles into two separate peaks, which is characteristic of the amorphous phase. Despite the different mechanisms of amorphous structure formation obtained as a result of simulation, the systems are similar in their parameters. A fluid model with imposed local interaction field behaves like an average between an equilibrium fluid and amorphous solids.