© 2013 Journal of Magnetics Thermal Stability, Mechanical Properties and Magnetic Properties of Fe-based Amorphous Ribbons with the Addition of Mo and Nb

(x = 0, 0.3, 0.6, 0.9 at. %) were obtained by melt spinning with 25-30 μm thickness. The thermal stability, mechanical properties and magnetic properties of Fe-Co-B-Si based systems were investigated. The values of thermal stability were measured using differential scanning calorimetry (DSC), including glass transition temperature (Tg), crystallization temperature (Tx) and supercooled liquid region (ΔTx = Tx – Tg). These amorphous ribbons were identified as fully amorphous, using X-ray diffraction (XRD). The mechanical properties of Fe-based samples were measured by nano-indentation. Magnetic properties of the amorphous ribbons were measured by a vibrating sample magnetometer (VSM). The amorphous ribbons of [(FexCo1-x)0.75B0.2Si0.05]96Mo4 (x = 0, 0.3, 0.6, 0.9 at. %) and [(FexCo1-x)0.75B0.2Si0.05]96Nb4 (x = 0, 0.3, 0.6, 0.9 at. %) exhibited soft magnetic properties with low coercive force (Hc) and high saturation magnetization (Ms)