Magnetic material and inductor
AssigneeTDK Corporation
InventorRyo Yokoyama
Life of this patent
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Abstract
A magnetic material includes main components having Fe2O3 of 46.0 to 51.0 mol %, CuO of 0.5 to 15.0 mol % and the rest being NiO. With respect to the main components of 100 wt parts, additives are added. The additives are bismuth oxide of 4.0 to 10.0 wt part in terms of Bi2O3, magnesium oxide of 1.0 to 5.0 wt part in terms of MgO, silicon oxide of 2.0 to 8.0 wt part in terms of SiO2, and cobalt oxide of 0.2 to 0.5 wt part in terms of CoO. Further, an inductor has a core including the above magnetic material, and is composed by molding a resin.
Claims8
A magnetic material comprising:
- main components including Fe2O3 of 46.0 to 51.0 mol %, CuO of 0.5 to 15.0 mol % and the rest being NiO;
- and
- additives including bismuth oxide of 4.0 to 10.0 wt parts in terms of Bi2O3, magnesium oxide of 1.0 to 5.0 wt parts in terms of MgO, silicon oxide of 2.0 to 8.0 wt parts in terms of SiO2, and cobalt oxide of 0.2 to 0.5 wt parts in terms of CoO with respect to said main component of 100 wt parts.
An inductor comprising a core made of a magnetic material, said magnetic material including:
- main components including Fe2O3 of 46.0 to 51.0 mol %, CuO of 0.5 to 15.0 mol % and the rest being NiO;
- and
- additives including bismuth oxide of 4.0 to 10.0 wt parts in terms of Bi2O3, magnesium oxide of 1.0 to 5.0 wt parts in terms of MgO, silicon oxide of 2.0 to 8.0 wt parts in terms of SiO2, and cobalt oxide of 0.2 to 0.5 wt parts in terms of CoO with respect to said main component of 100 wt parts,
- wherein said core is molded with resin.
Dependencies are inferred from the claim text.