Abstract
We investigated the effect of ion-beam mixing (IBM) on the physical properties of Fe–Si multilayerd films (MLF). By the magnetic, magneto-optical, optical and structural studies, it was found that the IBM results in a formation of metastable B2-phase Fe2Si wih a perfect crystalline structure, a low coercivity and a Curie temperature of about 550 K. An annealing at 720 K of the ion-beam mixed Fe–Si MLF further destroys the layered structure at the bottom and also decomposes Fe2Si to form a metastable magnetically-hard Fe5Si3 phase and, presumably, Fe3Si.
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