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Large rotating magnetocaloric effect of textured polycrystalline HoB2 alloy contributed by anisotropic ferromagnetic susceptibility.
- Source :
- Applied Physics Letters; 3/28/2022, Vol. 120 Issue 13, p1-6, 6p
- Publication Year :
- 2022
-
Abstract
- A large rotating magnetocaloric effect (RMCE) was always observed in the materials with anisotropic magnetisms, for example, ferromagnetism vs antiferromagnetism or paramagnetism, at different crystallographic directions. In this work, anisotropic ferromagnetic susceptibility is utilized to implement low-field (≤2 T) large RMCE in the textured polycrystalline HoB<subscript>2</subscript> alloy. The x-ray diffraction and scanning electron microstructure results reveal that the arc-melted HoB<subscript>2</subscript> exhibits preferred grain orientation along the solidification direction. The measured rotating magnetic entropy changes (−ΔS<subscript>R</subscript>) and refrigeration capacity are 6.27 J/kg K and 73.7 J/kg, respectively, under the magnetic field change of 1 T. They are comparable with those of other materials contributed by anisotropic magnetisms. Our results suggest that the polycrystal HoB<subscript>2</subscript> alloy is a promising material for practical application of magnetic refrigeration based on RMCE. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 120
- Issue :
- 13
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 156081324
- Full Text :
- https://doi.org/10.1063/5.0088571