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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

DE LA ESPRIELLA, Nicolás A; CASIANO, Gladys R  y  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.

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

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