Publicación: Comportamientos críticos y de histéresis de un ferromagneto de momentos magnéticos semienteros
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This work was developed through computational simulations based on a Monte Carlo method, under the implementation of a heat bath algorithm, for the studyof the thermomagnetic properties of a ferromagnetic mixed Ising model, which is constituted by a bipartite square lattice of sublattices A and B, where spins S = ±3/2, ±1/2 alternate with spins σ = ±5/2, ±3/2, ±1/2. The Hamiltonian of the system contains a ferromagnetic interaction to first neighbors and an external ongitudinal magnetic field. We calculate the dependence of the total magnetization, the sublattice magnetizations, the energy, the magnetic susceptibility and the hysteresis loops with the magnetic field at a fixed temperature. We find that the critical temperature of the system decreases for h < 0 and increases for h > 0. We also find that the hysteresis loops in this (3/2-5/2) mixed-spin ferromagnetic system exhibit no coercive magnetic field, and in some cases the magnitude of the magnetic remanence is not far from the saturation value.