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Specific Features of the Magnetocaloric Effect in a Uniaxial Paramagnet with Kramers Ions

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The changes in magnetic entropy upon isothermal magnetization of a uniaxial paramagnet with Kramers ions (spin S = 3/2) and single-ion easy-plane anisotropy were studied at low temperatures. It was demonstrated that the magnetocaloric effect upon magnetization in the easy direction is considerably stronger than the one corresponding to magnetization in the hard direction (perpendicular to the easy plane). It was found that magnetization in the hard direction is accompanied by an anomalous increase in magnetic entropy in a finite interval of magnetic fields. A nonmonotonic dependence of entropy on the final magnetization field is produced as a result.

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Funding

This study was supported in part by project no. 18-2-2-1 of the Ural Branch of the Russian Academy of Sciences and grant no. 18-02-00281 from the Russian Foundation for Basic Research.

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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 or M. V. Medvedev.

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Translated by D. Safin

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Kokorina, E.E., Medvedev, M.V. Specific Features of the Magnetocaloric Effect in a Uniaxial Paramagnet with Kramers Ions. Phys. Metals Metallogr. 120, 925–929 (2019). https://doi.org/10.1134/S0031918X19100053

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  • DOI: https://doi.org/10.1134/S0031918X19100053

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