Effect of Fe Content on the Soft Magnetic Properties of Fe-Rich FeSiBC Amorphous Alloy

Iron-based amorphous alloys have garnered significant attention because of their superior soft magnetic properties (SMPs).The effect of Fe content on the glass forming ability (GFA), thermal stability, and SMPs of Fe-rich Fe_83+xSi₁B₁₄C_2–x (x = 0, 0.5, 1.0, 1.5) amorphous alloys was investigated. It was observed that as the Fe content increases, the GFA and thermal stability of FeSiBC amorphous alloys decrease. When x = 0.5 and 1.0, the alloys approach the critical composition and the crystallization peak shifts from a single peak to double peaks. After annealed at 340°C for 30 min, the Fe_83.5Si₁B₁₄C_1.5 amorphous alloy exhibited superior SMPs, with saturation magnetic induction (Bs) and coercivity (Hc) values of approximately 1.68 T and 4.9 A/m, respectively.