Monte Carlo simulations for 1-and 2D spin crossover compounds using the atom-phonon coupling model

In this contribution we have simulated, using the Monte Carlo-Metropolis technique, the thermal behavior of an one dimensional and of a square lattice spin crossover system. In the one dimensional case, a long-range interaction parameter must be included in order to obtain a thermal hysteresis. For the square lattice we have tacked into account the nearest as well the next-nearest neighbors. We show the role of the elastic constant ratio on the hysteresis width. (C) 2008 Elsevier Ltd. All rights reserved.