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New Magnetic Materials Based on RNi Compounds for Cryogenic Technology

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Abstract

Magnetocaloric properties of Gd(Ni0.98Si0.02) and Dy(Ni0.95Si0.05) compounds and their hydrides Gd(Ni0.98Si0.02)H3 and Dy(Ni0.95Si0.05)H4 have been studied in a temperature interval of 2–100 K. It is established that the partial substitution of Si atoms for Ni atoms and subsequent hydrogenation can lead to significant changes in the Curie temperature, magnitude of the magnetocaloric effect, and temperature at which this effect is at maximum. In the hydrides, the characteristic temperatures shift to lower values by several dozen degrees while the magnetocaloric effect increases or remains the same, which can significantly expand the application of these materials in cryogenic technology.

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Funding

This work was supported by the Russian Science Foundation, project no. 18-13-00135.

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Authors and Affiliations

  1. Moscow State University, 119991, Moscow, Russia

    V. B. Chzhan, I. S. Tereshina, A. A. Kurganskaya, S. A. Lushnikov & V. N. Verbetsky

  2. Institute of Physics, Czech Academy of Sciences, Prague, Czech Republic

    E. A. Tereshina-Chitrova

Authors
  1. V. B. Chzhan
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  2. I. S. Tereshina
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  3. A. A. Kurganskaya
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  4. S. A. Lushnikov
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  5. V. N. Verbetsky
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  6. E. A. Tereshina-Chitrova
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Corresponding author

Correspondence to A. A. Kurganskaya.

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The authors declare that they have no conflict of interest.

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Translated by P. Pozdeev

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Chzhan, V.B., Tereshina, I.S., Kurganskaya, A.A. et al. New Magnetic Materials Based on RNi Compounds for Cryogenic Technology. Tech. Phys. Lett. 46, 303–306 (2020). https://doi.org/10.1134/S1063785020030189

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  • DOI: https://doi.org/10.1134/S1063785020030189

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