ABSTRACT
This chapter summarizes the results of optical microscopy visualizing the spin transition in a spin-crossover single crystal. It describes the model and the simulation method and the choice of interaction parameter values, which are derived from the available literature on elastic properties of spin crossover (SC) solids. The molecular and thermodynamic properties of SC compounds are well documented in literature, and there is no need to recall them from the basis of the ligand theory. At the solid state, however, all of these properties remain very slow and complicated to control and therefore incite scientists to the development of a fertilized area devoted to the investigations of the physical properties of SC nanoparticles. The chapter shows that an electro-elastic model, equivalent to an Ising-like model on a deformable-lattice, allowed describing several important features of the spin transition.
