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Numerical Study of a Mixed Ising Ferrimagnetic System

G. M. Buendia·M. A. Novotny
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Abstract

We present a study of a classical ferrimagnetic model on a square lattice in which the two interpenetrating square sublattices have spins one-half and one. This model is relevant for understanding bimetallic molecular ferrimagnets that are currently being synthesized by several experimental groups. We perform exact ground-state calculations for the model and employ Monte Carlo and numerical transfer-matrix techniques to obtain the finite-temperature phase diagram for both the transition and compensation temperatures. When only nearest-neighbor interactions are included, our nonperturbative results indicate no compensation point or tricritical point at finite temperature, which contradicts earlier results obtained with mean-field analysis.

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G. M. Buendia, M. A. Novotny. 1995-09-13. Numerical Study of a Mixed Ising Ferrimagnetic System. https://doi.org/10.1088/0953-8984%2F9%2F27%2F021

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