Provided is a soft magnetic powder capable of producing a dust core having excellent magnetic characteristics (low core loss, high saturation magnetic flux density). A soft magnetic powder having a composition represented by the composition formula Fe a Si b B c P d Cu e M f excluding inevitable impurities, wherein M in the composition formula is Nb, Mo, Zr, Ta, W, At least one element selected from the group consisting of Hf, Ti, V, Cr, Mn, C, Al, S, O, and N, and 79 at%≦a≦84.5 at%, 0 at%≦b6 at% , 0 at%c≦10 at%, 4 at%d≦11 at%, 0.2 at%≦e≦0.53 at%, 0 at%≦f≦4 at%, and a+b+c+d+e+f=100 at%, and the particle size is 1 mm or less. And the median circularity of the particles constituting the soft magnetic powder is 0.4 or more and 1.0 or less.
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机译：本发明提供一种软磁性粉末，其能够制造具有优异的磁特性（低铁损，高饱和磁通密度）的压粉磁芯。具有由组成式Fe a Si b B c P d Cu < Sub> e M f 排除不可避免的杂质，其中组成式中的M为Nb，Mo，Zr，Ta，W，至少一种选自Hf，Ti的元素，V，Cr，Mn，C，Al，S，O和N，以及79 at％≦a≦84.5 at％，0 at％≦b <6 at％，0 at％展开▼
