Magnetocaloric particles of the Laves phase compound HoAl2 prepared by electrode induction melting gas atomization

Processing magnetocaloric materials into magnetic refrigerant particles is an essential issue in developing high-performance refrigerators. Here, we succeed stably producing of the promising material HoAl2 by a newly devised method based on electrode induction melting gas atomization process. The particle size range order submillimeter, which suitable for practical refrigeration systems. resulting with less contamination have good morphological, magnetic, and properties: (i) almost spherical shapes few internal pores, (ii) sharp ferromagnetic transition around 30 K, (iii) large effect comparable to bulk counterpart. These features suggest HoAl$_{2}$ gas-atomized potential use as refrigerant. presented can be applied not only but also other brittle high points, facilitating production various refrigerants needed develop refrigerators hydrogen liquefaction.