SciELO - Scientific Electronic Library Online

 
vol.23 issue2Identification and Location of Distribution Systems Failures Through Service Quality Meters of Electric PowerMagnetic Properties of mixed spin-3/2 and spin-5/2 Ising Ferrimagnetic System author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Información tecnológica

On-line version ISSN 0718-0764

Abstract

DE LA ESPRIELLA, Nicolás A; CASIANO, Gladys R  and  ORTEGA, César. Monte Carlo Study of a Mixed Ising Ferrimagnet with Different Anisotropies. Inf. tecnol. [online]. 2012, vol.23, n.2, pp.117-128. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642012000200014.

Using Monte Carlo simulations, the magnetic properties of a mixed Ising ferrimagnetic model with spins S = ±3/2, ±1/2 y σ = ±5/2, ±3/2, ±1/2 distributed on a square lattice with different anisotropies was analyzed. It was assumed that the exchange interaction to nearest neighbors, J1, between spins S and σ, is antiferromagnetic (J1 < 0). Also, it was considered that the effect of the intensities of the single-ion anisotropies, due to the crystalline fields of the sublattices S and σ, Ds and Dj respectively. The existence and dependence of the compensation temperature in the model with respect to the single-ion anisotropies was also studied. By fixing the parameter Ds and varying the intensity of Dj it probable phase transitions of first order appear. The analysis of the critical temperatures is obtained through the maximum of the specific heat of the system. Phase diagrams at finite temperatures are obtained in the temperature-anisotropy plane.

Keywords : Ising Model; Monte Carlo; compensation temperatures; critical temperatures; single-ion anisotropies.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License