Monte Carlo simulation of a two-dimensional magnetic foam

A two-dimensional Ising-like model with spin 1 and long-range interactions is studied numerically through a Monte Carlo simulation. The goal of the si mulation is to describe pattern formations and critical temperature of two- dimensional magnetic structures. Three sets of parameters are considered. t hat give rise to stripes, labyrinths or cellular domain structures. We dete rmine for each configuration the transition ordering temperatures, the rela xation of the energy, the hysteresis cycle, and the average size of the dom ains. (C) 2001 Elsevier Science B.V. All rights reserved.