SOFT MAGNETIC ALLOY AND MAGNETIC DEVICE

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Provided are soft magnetic alloy and like having excellent soft magnetic characteristics and a high corrosion resistance at the same time, which satisfy all of a high saturation magnetic flux density, a low coercive force, and a high magnetic permeability (μ ′ ). The soft magnetic alloy has a composition formula of ((Fe_(1-(α +β ))X1_α X2_β )_(1-(a+b+d+e))M_aB_bCr_dCu_e)_1-_fC_f, wherein the X1 is at least one selected from a group consisting of Co and Ni, and wherein X2 is at least one selected from a group consisting of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O and rare earth elements, and wherein M is at least one selected from a group consisting of Nb, Hf, Zr, Ta, Ti, Mo and V. 0.030=0, β >=0, and 0COPYRIGHT KIPO 2018