| abstract |
Disclosed is a magnetic alloy having a chemical composition represented by the following general formula: Fe100-x-yCuxBy (atom%) (wherein x and y represent numbers respectively satisfying 0.1 ≤ x ≤ 3 and 10 ≤ y ≤ 20) or the following general formula: Fe100-x-y-zCuxByXz (atom%) (wherein X represents at least one element selected from the group consisting of Si, S, C, P, Al, Ge, Ga and Be, and x, y and z represent numbers respectively satisfying 0.1 ≤ x ≤ 3, 10 ≤ y ≤ 20, 0 < z ≤ 10 and 10 < y + z ≤ 24). The magnetic alloy has a structure wherein crystal grains having an average grain size of not more than 60 nm are contained in an amorphous matrix, while having a saturation flux density of not less than 1.7 T. |