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Magnetocaloric Properties in Gd 3 Ni 2 and Gd 3 CoNi Systems

In: Latest Research on Energy Recovery

Author

Listed:
  • Hsini Mohamed
  • Souhir Bouzidi

Abstract

Intermetallic Gd3Ni2 and Gd3CoNi undergo second-order ferromagnetic paramagnetic phase transition at the Curie temperature, TC. They exhibit a large magnetocaloric effect (MCE). This MCE is manifested with a high entropic peak of 8 and 8.3 J.Kg-1 K-1, at the vicinity TC under 5 T magnetic applied field for Gd3Ni2 and Gd3CoNi, respectively. With their boosted MCE and large refrigerant capacity, Gd3Ni2 and Gd3CoNi compounds can be a candidate as a magnetocaloric refrigerator which is still one of the current research projects recommended by the low energy consumption and low environmental impact of these devices. Based on the Landau theory, Gibb's free energy leads to determine temperature-dependent parameters which correspond to the electron condensation energy and magnetoelastic coupling and the magnetic entropy change which is a very crucial parameter to evaluate the MCE of a given magnetic system.

Suggested Citation

  • Hsini Mohamed & Souhir Bouzidi, 2023. "Magnetocaloric Properties in Gd 3 Ni 2 and Gd 3 CoNi Systems," Chapters, in: Petrica Vizureanu (ed.), Latest Research on Energy Recovery, IntechOpen.
    • Handle: RePEc:ito:pchaps:253655
    DOI: 10.5772/intechopen.102065
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    More about this item

    Keywords

    magnetic energy; magnetic entropy change; magnetization; phase transition;
    All these keywords.

    JEL classification:

    • Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General

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