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Abstract <p>The magnetocaloric characteristics of the medium-entropy Gd<sub>0.33</sub>Dy<sub>0.33</sub>Y<sub>0.33</sub>Ni compound and its hydride with the maximum hydrogen content to Gd<sub>0.33</sub>Dy<sub>0.33</sub>Y<sub>0.33</sub>NiH<sub>3</sub> are considered. The maximum magnetocaloric effect for the initial compound equal to 3.7 J kg<sup>–1</sup> K<sup>–1</sup> is achieved at <i>T</i> = 66 K. The maximum MCE of the hydride is achieved at <i>T</i> = 11 K and is equal to 5.3 J kg<sup>–1</sup> K<sup>–1</sup>. The cooling capacity of the medium-entropy alloy hydride exceeds that of the hydride of previously studied pseudo-binary alloy, which crystallizes with the formation of the same FeB-type orthorhombic structure.</p>

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Magnetocaloric Properties of Medium-Entropy Gd0.33Dy0.33Y0.33Ni Alloy and Its Hydride

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. A. Kurganskaya,
  • Zh. Liu,
  • E. S. Kozlyakova,
  • I. S. Tereshina,
  • V. N. Verbetsky,
  • S. V. Mitrokhin,
  • A. N. Vasiliev

摘要

Abstract

The magnetocaloric characteristics of the medium-entropy Gd0.33Dy0.33Y0.33Ni compound and its hydride with the maximum hydrogen content to Gd0.33Dy0.33Y0.33NiH3 are considered. The maximum magnetocaloric effect for the initial compound equal to 3.7 J kg–1 K–1 is achieved at T = 66 K. The maximum MCE of the hydride is achieved at T = 11 K and is equal to 5.3 J kg–1 K–1. The cooling capacity of the medium-entropy alloy hydride exceeds that of the hydride of previously studied pseudo-binary alloy, which crystallizes with the formation of the same FeB-type orthorhombic structure.