Magnetism and damping properties of Fe_2CrAl and FeSiCrAl alloys

摘要

The proposed performance of Fe_2CrAl and FeSiCrAl, the electronic density of states, magnetic moment, and magnetic anisotropy energy were calculated using the first-principles of density functional theory (DFT), a generalized gradient approximation (GGA), and the full-potential linearized augmented plane wave (FP-LAPW) method. The calculation results show that the damping category of Fe_2CrAl and FeSiCrAl are ferromagnetic. Ferromagnetic damping comes from spin-orbit interaction and d-orbital hybridisation effects between transition metal atoms. The increase in total magnetic moment, and the decrease in coercive force, will cause the ferromagnetic damping of FeSiCrAl to be greater than that of Fe_2CrAl.