“…After the discovery of the first magnetic refrigeration prototype near room temperature5 and the giant MCE in Gd 5 (Si 2 Ge 2 )67, a large MCE has been realized in a lot of materials in the past two decades, such as ReCo 2 (Re = Er, Ho, and Dy) alloys89, manganite oxides (Re, M)MnO 3 (Re = Lanthanide, M = Ca, Sr, and Ba)1011, Ni-Mn-X (X = Ga, In, and Sn) based Heusler alloys1213141516, MnAs based compounds3171819, La(Fe, Si) 13 and related compounds20212223, as well as rare earth based intermetallic compounds24252627282930. Amongst the families of MCE materials, the compounds with first-order magnetic transition (FOMT) have been found promising due to their large and/or sharp changes in magnetization and the strong coupling between crystallographic structure and magnetism, such as Gd 5 Ge 4− x Si x 7, MnAs 1− x Sb x 1831, MnFe(As, P, Si, Ge)1732, LaFe 13− x Si x (H δ )142123 and Heusler-type magnetic shape-memory alloys1416.…”