Soft magnetic alloy, soft magnetic alloy ribbon, laminate, and magnetic core

A soft magnetic alloy, having the formula (Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e+f))MaBbPcSidCeSf, wherein

• the soft magnetic alloy has a structure containing Fe-based nanocrystals,
• convex portions having an average convex portion height of 7 nm to 130 nm are present in a continuous pattern shape on an alloy surface,
• an amount of B contained in the convex portions is smaller than an amount of B inside the alloy,
• X1 is one or more selected from the group consisting of Co and Ni,
• X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and a rare earth element,
• M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, Ti, and V, and
• 0.060≤a≤0.080,
• 0.080≤b≤0.120,
• 0.030≤c≤0.050,
• 0≤d≤0.020,
• 0.001≤e≤0.010,
• 0≤f≤0.030,
• α≥0,
• β≥0, and
• 0≤α+β≤0.50 are satisfied.

A soft magnetic alloy having the formula Fe(1-(a+b+c+d))NbaBbPcSid, wherein

• the soft magnetic alloy has a structure containing Fe-based nanocrystals,
• convex portions having an average convex portion height of 7 nm to 130 nm are present in a continuous pattern shape on an alloy surface,
• an amount of B contained in the convex portions is smaller than an amount of B inside the alloy, and
• 0≤a≤0.140,
• 0.020≤b≤0.200,
• 0≤c≤0.150, and
• 0≤d≤0.090 are satisfied.