Simulations of Temperature-Dependent Magnetization in FexGd100−x (20 ≤ x ≤ 80) Alloys

Theoretical calculations of the temperature-dependent magnetization in FeGd alloys were done with use Heisenberg-type atomistic spin Hamiltonian and Monte Carlo algorithms. The random allocation atoms desired crystal structure was used for simulations magnetically amorphous alloys. Performed two different structures have shown an important role coordination number on observed critical temperature compensation point. Moreover, value exchange interaction between Fe Gd sublattices plays a key simulations—an increase Fe–Gd constant provides each concentration elements, which explains higher stabilization moments. It that obtained behavior is consistent experimental observations, confirms applicability atomic model to study or other magnetic alloy structures.