Liquid Structure - Melting
Formation and Structure of Melt from Solids with Highly Symmetrical Packing Arrangements
----Displacement Impossible --------------- Displacemen Possible
-----
The two seemingly contradictory characteristic of liquids is that the interatomic potential energies are still exist between atoms and that these atoms have position instability. The existence of interatomic potential energies results that atomic groups has to be present in the liquid. The free movement of atomic groups requires that the surface of the atomic group formation has to be lined up or parallel with the direction of the displacement. The energy required for the displacement of the atomic group is the function of the surface volume ratio. Atomic groups having parallel surface with the displacement and having the smallest value for the surface volume ratio will most likely destabilize when melting occurs. Based on these theoretical considerations the presence of destabilized vibrating atomic sheets should be expected in the melt.