Among the many models of Statistical Physics, Ising model Ising model [1-3] is perhaps the most ubiquitous. Till date it is being applied in varied context with reasonable success. In the "classical" version of this model, one has in general a set of lattice sites and to each site is associated a variable called spin which can assume the values . For a system of N sites, there can hence be 2 N possible configurations. © 2010 Springer-Verlag Berlin Heidelberg.