Enhancing magnetocaloric performance of Ni₅₀Mn₃₅Sn₁₅ Heusler alloys: comparative analysis of arc melting and laser induced melting

Abstract This study investigated the synthesis of Ni 50 Mn 35 Sn 15 (NMS) Heusler alloys using arc melting and laser-induced melting techniques, focusing on the influence of these methods on the alloys’ structural and magnetocaloric properties. The research further examined the impact of post-synthesis treatments, including annealing and mechanical grinding, as well as the stability of these alloys under repeated magnetization cycles. The results demonstrated that laser-induced melting significantly enhanced the magnetocaloric performance of NMS alloys compared to arc melting. This method produced alloys with finer microstructures, leading to improved performance and stability in magnetocaloric applications. The study emphasized the importance of synthesis methods in developing efficient magnetocaloric materials and highlights their potential to advance sustainable cooling technologies.