Structural and Mechanical Properties of NiCoMnSn Compound for Magnetic Refrigeration Close to Ambient Temperature

Scientific knowledge in the field of magnetic refrigeration in the vicinity of room temperature has aroused great interest in recent years because of its high energy efficiency, while having a low environmental impact, which is why much work is being done on materials to advance and control the entire chain from material to application through characterization. Quaternary Heusler alloys have received considerable attention in the development of magnetic materials to study, design and develop magnetic refrigeration systems near room temperature. The aim of this study is to optimize the thermal and structural behavior of a quaternary NiCoMnSn alloy for the concentrations x = 0, 1/4, 1/2, and 3/4; using CASTEP numerical modeling code based on quantum mechanics and density functional theory for the solution of the Schrodinger equation. The main predictors obtained allow us to state that the structure in the ferromagnetic state is more stable; and this makes this material a good candidate for different applications.