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説明:

We show the giant magnetocaloric effect of HoNi2 compound can be tuned around hydrogen liquefaction temperature by substituting Ho with Gd and Ni with Co in Ho1-xGdxNi2-yCoy. While the Curie temperature of Ho1-xGdxNi2-yCoy can be tuned from 15 to 32 K originating from the lattice expansion of the cubic structure, giant entropy change of 22.0 J/kgK is retained near the hydrogen liquefaction temperature. A table-like entropy change observed in a broad temperature range of 20 to 32 K makes them promising as magnetocaloric materials for cryogenic magnetic refrigeration utilizing an Ericsson cycle.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Magnetocaloric Materials, Cryogenic, Magnetic entropy

刊行年月日: 2020-08-04

出版者: Elsevier BV

掲載誌:

• Scripta Materialia (ISSN: 13596462) vol. 188 p. 302-306

研究助成金:

• Japan Science and Technology Corporation

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.4964

公開URL: https://doi.org/10.1016/j.scriptamat.2020.07.046

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更新時刻: 2024-11-16 08:30:37 +0900

MDRでの公開時刻: 2024-11-16 08:30:37 +0900