A magnetic core having a magnet for a magnetic bias and inductance component using the same

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PROBLEM TO BE SOLVED : To provide a magnetic core which is provided with at least one or more gaps in a magnetic path, equipped with a permanent magnet as a magnetic bias magnet arranged adjacent to the gap to supply a magnetic bias from the ends of the gap, and is superior in DC superimposition, core loss, and oxidation- resistant properties; and to provide an inductance part using the same. SOLUTION : An inductance part is equipped with a magnetic core at one or more magnetic gaps each about 50 to 10, 000 μm in gap length in a magnetic path, a magnetic bias magnet arranged adjacent to the gap so as to supply a magnetic bias from the ends of the magnetic gap, and a coil winding wound on the magnetic core at least by one turn. The above magnetic bias magnet is formed of rare earth magnet powder coated with inorganic glass, and the rare earth magnet powder is selected from Sm-Co magnet powder, Nd-Fe-B magnet powder, and Sm-Fe-N magnet powder.