Interpretation of the difference between the kcn and RbCN elastically ordered structural phase on the basis of a pseudo-oriented dipole potential model

Abstract

Using the comparison between the temperature evolution of a Three Body Interaction model (TBI) and a Pseudo-Oriented Dipole model (POD), we try to give an interpretation of the difference between the KCN and RbCN elastically ordered phase (orthorhombic ferroelastic phase for KCN and monoclinic antiferroelastic phase for RbCN).