Soft magnetic powder, powder magnetic core, magnetic element, and electronic device

A soft magnetic powder, comprising:

• a composition consisting of Fe100-a-b-c-d-e-f-g-hCUaSibBcMdM′eXfAlgTih,
• wherein M is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, and Mo,
• M′ is at least one element selected from the group consisting of V, Cr, Mn, a platinum group element, Sc, Y, Au, Zn, Sn, and Re,
• X is at least one element selected from the group consisting of Sb, In, Be, and As, and
• where a, b, c, d, e, f, g, and h represent an atomic percentage
• 0.1≤a≤3,
• 5<b≤20,
• 3<c≤20,
• 5≤b+c≤30,
• 0.1≤d≤30,
• 0≤e≤10,
• 0.1≤f≤5,
• 0.002≤g≤0.032, and
• 0.002≤h≤0.038, and
• a crystalline structure contained in an amount of 40 vol % or more, the crystalline structure having a particle diameter of 1 nm to 30 nm,
• wherein a volume resistivity of a green compact in a compacted state at a pressure of 10 MPa is 1 KΩ·cm or more and 500 Ω·cm or less,
• whereon the soft magnetic powder is an atomized powder having an average particle size of 1 μm or more and 40 μm or less, and
• wherein a Vickers hardness of particles of the soft magnetic powder is 1000 or more and 3000 or less, as measured in a central portion of a cross-section of each of the particles.