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- W3123839059 endingPage "158757" @default.
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- W3123839059 abstract "• The interval between spin reorientation transition temperature and Curie temperature of HoB 2 increases by introducing Dy. • A table-like magnetic entropy change was obtained in Dy-containing compounds. • The refrigeration capacity of Ho 0.6 Dy 0.4 B 2 reaches up to 635 J kg −1 compared to 523 J kg −1 in HoB 2 . In this study, the crystal structure, magnetic properties, and magnetocaloric effect of Ho 1- x Dy x B 2 compounds were investigated. It was found that nearly single-phase (Ho,Dy)B 2 compounds with the AlB 2 -type structure directly form in the as-arc melted alloys and have two successive magnetic transitions. With the increase of Dy concentration x from 0 to 0.8, the spin reorientation transition temperature remains at about 13 K, while the Curie temperature significantly increases from 16 to 43 K. As a result, the full-width at half-maximum of the magnetic entropy change versus temperature curve increases from 19.9 to 48.2 K. Also, these Ho 1- x Dy x B 2 compounds exhibit a large refrigeration capacity of 523–635 J kg −1 under a magnetic field change of 5 T, although the maximum magnetic entropy change decreases from 34.3 to 17.2 J kg −1 K −1 . In addition, Dy-containing compounds exhibit a table-like magnetocaloric effect compared with the HoB 2 compound. Our results indicate that Ho 1- x Dy x B 2 compounds are a promising candidate for cryogenic magnetic refrigeration around liquid hydrogen temperature." @default.
- W3123839059 created "2021-02-01" @default.
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- W3123839059 date "2021-05-01" @default.
- W3123839059 modified "2023-10-17" @default.
- W3123839059 title "Enhanced refrigeration capacity in Ho1-Dy B2 compounds around liquid hydrogen temperature" @default.
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- W3123839059 doi "https://doi.org/10.1016/j.jallcom.2021.158757" @default.
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