Method for producing an oxide magnetic material
AssigneeTDK Corporation
InventorsKo Ito, Yukio Takahashi, Takuya Ono, Hiroshi Harada
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Abstract
An oxide magnetic material comprising main constituents including Fe2O3, ZnO, CuO and NiO. Y2O3 of 0.003 to 0.021 wt % and-ZrO2 of 0.06 to 0.37 wt % are included in main constituents with respect to all amounts. It is also preferable that Si of 0.010 to 0.0112 wt % is included in main constituents with respect to all amounts. Further, it is also preferable that Y2O3 of 0.001 to 0.011 wt % , ZrO2 of 0.031 to 0.194 wt %, and Si of 0.010 to 0.056 wt % are included in main constituents with respect to all amounts.
Claims5
A method for producing an oxide magnetic material, said method comprising:
- mixing and crushing a raw material with a media agitating mill of a wet internal circulation type;
- baking the mixed and crushed material;
- and
- crushing the baked material with the media agitating mill;
- wherein a partially stabilized zirconia is used as medium beads at the time of mixing and crushing the raw material and at the time of crushing the baked material in order to cause Y2O3 of 0.003 to 0.021 wt % and ZrO2 of 0.06 to 0.37 wt % to be in the oxide magnetic material.
A method for producing a chip part, said method comprising:
- producing an oxide magnetic material, including:
- mixing and crushing a raw material with a media agitating mill of a wet internal circulation type;
- baking the mixed and crushed material;
- and
- crushing the baked material with the media agitating mill,
- wherein a partially stabilized zirconia is used as medium beads at the time of mixing and crushing the raw material and at the time of crushing the baked material in order to cause Y2O3 of 0.003 to 0.021 wt % and ZrO2 of 0.06 o 0.37 wt % to be in the oxide magnetic material;
- and
- forming and baking the oxide magnetic material and an internal conductor at temperature in the range between 880° C. and 920° C.
Dependencies are inferred from the claim text.