A method for producing a soft magnetic alloy powder includes: a step of producing an amorphous alloy powder that has an average particle diameter of 10.0 m or more and 45.0 m or less and that is formed of a composition represented by a composition formula Fe.sub.xCu.sub.aNb.sub.b (Si.sub.1-yB.sub.y).sub.100-x-a-b, where 0.3a2.0, 2.0b4.0, and 72.5x<75.5 are satisfied, and y is a number that satisfies f(x)y0.99, and f(x)=(410.sup.34)x.sup.17.56; and a step of heating at a temperature of 500 C. or higher and 600 C. or lower to produce a soft magnetic alloy powder containing 30 vol % or more of crystal grains having a crystal grain size of 1.0 nm or more and 30.0 nm or less, and volume resistivity of a green compact is 10.010.sup.3 [.Math.cm] or less.

A method for producing a soft magnetic alloy powder includes: a step of producing an amorphous alloy powder that has an average particle diameter of 10.0 m or more and 45.0 m or less and that is formed of impurities and a composition represented by a composition formula Fe.sub.xCu.sub.aNb.sub.b (Si.sub.1-y (B.sub.1-zCr.sub.z).sub.y).sub.100-x-a-b, where 0.3a2.0, 2.0b4.0, 75.5x79.5, 0.55y0.91, and 0.015z0.185 are satisfied; and a step of heating at a temperature of 420 C. or higher and 620 C. or lower to produce a soft magnetic alloy powder, and a crystal grain size is 5.0 nm or more and 20.0 nm or less, as measured by an X-ray diffraction method, and volume resistivity of the green compact is 9.010.sup.3 [.Math.cm] or less.

A soft magnetic powder including a core containing a soft magnetic metal material and an insulating film covering the surface of the core. The insulating film contains an insulating metal oxide and an iron component, and the iron component is embedded in the insulating film.

An amorphous alloy soft magnetic powder has a composition represented by (Fe.sub.xCo.sub.1x).sub.100(a+b)(Si.sub.yB.sub.1y).sub.aM.sub.b, where M is at least one selected from the group consisting of C, S, P, Sn, Mo, Cu, and Nb, and x, y, a, and b satisfy 0.73x0.85, 0.02y0.10, 13.0a19.0, and 0b2.0. A SiK absorption edge XANES spectrum obtained when performing an XAFS measurement on particles has a peak A present in a range of 18421 eV, a peak B present in a range of 18451 eV, and a peak C present in a range of 18481 eV. An intensity ratio A/C is 0.40 or less, and an intensity ratio B/C is 0.60 or less.