Dynamical temperature study for spin-crossover

Abstract

Making use of the Rugh's dynamical and micro‐canonical approach to temperature, we study the classical model of three dimensional spin‐crossover compounds. These compounds are characterized by magnetic ions that can be in a high‐spin or low‐spin state. We consider the case of diamagnetic low‐spin state which are appropriate for Fe‐Co compounds. The values of the magnetization average and fraction of high‐spin/low‐spin are studied over a wide range of values for the system size, temperature, magnetic field, nearest neighbor coupling and exchange interaction. We also address metastability according to the relative values of interaction parameters and the phase diagram of the model.

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