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vol.23 issue2Monte Carlo Study of a Mixed Ising Ferrimagnet with Different AnisotropiesCoefficient of Performance of a System Composed by a Domestic Refrigerator Coupled to a Thermal Storage for Energy Recovery author indexsubject indexarticles search
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Información tecnológica

On-line version ISSN 0718-0764

Abstract

DE LA ESPRIELLA, Nicolás A; CASIANO, Gladys R  and  ORTEGA, César. Magnetic Properties of mixed spin-3/2 and spin-5/2 Ising Ferrimagnetic System. Inf. tecnol. [online]. 2012, vol.23, n.2, pp.129-140. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642012000200015.

The magnetic properties of ferrimagnetic Ising system with mixed spins S = ±3/2, ±1/2 y σ = ±5/2, ±3/2, ±1/2 are studied. The spins are alternated on a square lattice, such that nearest-neighbor interactions occur between different spins (S- σ), and interactions next nearest-neighbor between spins of the same type (σ^σ). When the Hamiltonian includes couplings antiferromagnetic between spins S and σ, ferromagnetic and antiferromagnetic between spins σ and D crystal field, it was found that the critical temperature strongly depends on the values of the parameters of the Hamiltonian. The behavior at finite temperature of the total magnetization of the lattice, the magnetization of the sublattices and the total magnetic susceptibility are also studied, taking into account the effects of exchange coupling between next nearest-neighbor and the crystal field of the lattice. For the Hamiltonian studied, there are not compensation points.

Keywords : Ising system; Monte Carlo; critical temperatures; magnetizations; crystal field.

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