Abstract
We employ the Monte Carlo method to provide a computer description of the thermodynamic properties of the disordered antiferromagnetic Ising model for a simple cubic lattice with allowance for the nearest neighbors interaction and the next-nearest neighbors interaction. We construct the phase diagram for the model in an external magnetic field for systems with spin concentrations p=1.0, 0.95, and 0.8. We also establish the tricritical behavior of the model. Finally, we study the critical behavior of the model in weak fields.
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Zh. Éksp. Teor. Fiz. 116, 953–961 (September 1999)
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Prudnikov, V.V., Markov, O.N. & Osintsev, E.V. Phase transformations in the disordered antiferromagnetic Ising model. J. Exp. Theor. Phys. 89, 508–512 (1999). https://doi.org/10.1134/1.559009
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DOI: https://doi.org/10.1134/1.559009