Estudio de propiedades magnéticas de la aleación Fe81Si6B8P4Cu1 elaborada con materiales de baja pureza

Abstract

Magnetic properties of the Fe₈₁Si₆B₈P₄Cu₁ alloy, synthesized as completely amorphous ribbons from low purity materials selected for its low costs and high availability, are studied. Non annealed ribbons exhibit excellent soft magnetic properties with a coercive field of 11 A/m, relative permeability of 13,000 at 100 kHz, magnetic losses per cycle of 7 mJ/kg at 50 Hz and a saturation magnetization of 1.6 T. After annealing a significant increase in the relative permeability, reaching values of 30,000 at 100 kHz, is observed. However, maximum induction at 500 A/m remains constant, the coercivity slightly increases to values of 13.5 A/m and the magnetic losses have no improvement.