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Magnetocaloric Effect in an Ising Ferromagnet in the Constant Coupling Approximation

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The magnetocaloric effects in an Ising ferromagnet with short-range exchange interactions between nearest magnetic neighbors are calculated using the constant coupling cluster approximation. It is shown that, compared with the results given by the molecular field approximation, the constant coupling approximation gives greater effects both in the magnetic entropy under isothermal magnetization and in the sample temperature upon adiabatic switching of the magnetic field.

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ACKNOWLEDGMENTS

This work was carried out within state task no. 0389-2015-0024 and was partly supported by the Complex Program of Fundmental Scientific Research of the Ural Branch of the Russian Academy of Sciences for 2018–2020 (project no. 18-2-2-1).

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Authors and Affiliations

  1. Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, 620016, Ekaterinburg, Russia

    E. E. Kokorina & M. V. Medvedev

Authors
  1. E. E. Kokorina
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  2. M. V. Medvedev
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Correspondence to E. E. Kokorina.

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Translated by E. Chernokozhin

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Kokorina, E.E., Medvedev, M.V. Magnetocaloric Effect in an Ising Ferromagnet in the Constant Coupling Approximation. Phys. Metals Metallogr. 119, 1050–1055 (2018). https://doi.org/10.1134/S0031918X18110091

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  • DOI: https://doi.org/10.1134/S0031918X18110091

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