Magnetocaloric Effect in an Ising Ferromagnet in the Constant Coupling Approximation


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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.

About the authors

E. E. Kokorina

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences

Author for correspondence.
Email: kokorina@iep.uran.ru
Russian Federation, Ekaterinburg, 620016

M. V. Medvedev

Institute of Electrophysics, Ural Branch, Russian Academy of Sciences

Email: kokorina@iep.uran.ru
Russian Federation, Ekaterinburg, 620016

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