Magnetic powder and production method thereof, magnetic core and production method thereof, coil component and motor

A magnetic powder consisting essentially of:

• a principal component represented by a general formula Fea-eMe(Sib(B1-αCα)cPd)100-a, in which M is one or more selected from the group consisting of Ni and Co, e is 0 to 12.0, α is 0, and b+c +d=1.00,
• when representing as (a, b) the a and the b, (a, b) is within a region surrounded by A1 (71.0, 0.19), B1 (79.6, 0), C1 (80.0, 0), D1 (81.0, 0.17), E1 (81.0, 0.44), F1 (79.6, 0.78) and G1 (71.0, 0.38),
• when representing as (a, c) the a and the c, (a, c) is within a region surrounded by A2 (71.0, 0.48), B2 (78.1, 0), C2 (79.6, 0), D2 (81.0, 0.18), E2 (81.0, 0.26), F2 (79.1, 0.75) and G2 (71.0, 0.72), and
• when representing as (a, d) the a and the d, (a, d) is within a region surrounded by A3 (71.0, 0.08), B3 (71.9, 0), C3 (79.1, 0), D3 (81.0, 0.36), E3 (81.0, 0.62), F3 (77.2, 0.67) and G3 (71.0, 0.23).