Mohamad, Hadey K.; Domashevskaya, E.P.; Klinskikh, A.F. - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 22, pp. 4713-4718
The magnetic behaviors of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system on a square lattice are studied with the mean-field approximation (MFA) based on the Bogoliubov inequality for the free energy. A Landau expansion of the free energy in the order parameter is also described in this...