A method of manufacturing a magnetic core, the magnetic core and a coil component using the same

To provide a high strength and the magnetic core combines high resistivity and coil component and high strength and high specific manufacturing method of the resistance of the magnetic core that can be easily obtained magnetic core, using the same. Method for producing a magnetic core of the present invention includes a method for producing a magnetic core having a tissue Fe-based soft magnetic alloy grains are dispersed, a first Fe-based soft magnetic alloy powder containing Al and Cr, the Cr and Si a second Fe-based soft magnetic alloy powder, through a first step of mixing a binder, a second step of molding a mixture obtained through the first step, the second step to obtain and a third step of heat treating the molded body, an oxide layer is formed on the surface of the Fe-based soft magnetic alloy powder by the heat treatment, Fe-based soft magnetic alloy powder together through the oxide layer and wherein the coupling the.