Abstract
In this work, we have obtained an exact solution to the one-dimensional modified 12-state Potts model using the Kramers-Wannier transfer matrix with allowance for the exchange interaction between nearest neighbors in an external magnetic field. Analytical expressions have been derived for the heat capacity, magnetization, magnetic susceptibility, magnetic entropy, and magnetocaloric effect as functions of temperature, magnitude and sign of exchange interaction, and the magnitude and direction of the magnetic field. The behavior of all of these parameters has been investigated in detail using numerical methods. The possibility of applying the results obtained to explain the observed magnetic properties of real cubic magnets with a NaCl structure and easy axes oriented along the [110] crystallographic directions has been discussed.
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Original Russian Text © F.A. Kassan-Ogly, B.N. Filippov, A.I. Proshkin, A.V. Zarubin, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 2, pp. 123–135.
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Kassan-Ogly, F.A., Filippov, B.N., Proshkin, A.I. et al. Twelve-state Potts model in a magnetic field. Phys. Metals Metallogr. 116, 115–127 (2015). https://doi.org/10.1134/S0031918X15020088
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DOI: https://doi.org/10.1134/S0031918X15020088