Ni-zn-cu-based ferrite particles, green sheet comprising the ni-zn-cu-based ferrite particles and ni-zn-cu-based ferrite sintered ceramics
AssigneeToda Kogyo Corporation
InventorsYoji Okano, Tomohiro Dote, Takanori Doi
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Abstract
An object of the present invention is to provide a ferrite material that is excellent in temperature characteristic and DC superimposition characteristic. The present invention relates to Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite having a specific composition, 1 to 20% by weight of nickel oxide, 0 to 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, and a ferrite sintered ceramics obtained by sintering the ferrite particles.
Claims6
Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite, 1 to 20% by weight of nickel oxide and 1 to 10% by weight of copper oxide, which Ni—Zn—Cu ferrite has a composition comprising 35 to 45 mol % of Fe2O3, 10 to 20 mol % of NiO, 30 to 40 mol % of ZnO and 6 to 15 mol % of CuO in terms of the respective oxides.
Ni—Zn—Cu-based ferrite particles comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite, 1 to 20% by weight of nickel oxide, not more than 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, which Ni—Zn—Cu ferrite has a composition comprising 35 to 45 mol % of Fe2O3, 10 to 20 mol % of NiO, 30 to 40 mol % of ZnO and 6 to 15 mol % of CuO in terms of the respective oxides.
An Ni—Zn—Cu-based ferrite sintered ceramics comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite, 1 to 20% by weight of nickel oxide and 1 to 10% by weight of copper oxide, which Ni—Zn—Cu ferrite has a composition comprising 35 to 45 mol % of Fe2O3, 10 to 20 mol % of NiO, 30 to 40 mol % of ZnO and 6 to 15 mol % of CuO in terms of the respective oxides.
An Ni—Zn—Cu-based ferrite sintered ceramics comprising 70 to 95% by weight of an Ni—Zn—Cu ferrite, 1 to 20% by weight of nickel oxide, not more than 20% by weight of zinc oxide and 1 to 10% by weight of copper oxide, which Ni—Zn—Cu ferrite has a composition comprising 35 to 45 mol % of Fe2O3, 10 to 20 mol % of NiO, 30 to 40 mol % of ZnO and 6 to 15 mol % of CuO in terms of the respective oxides.
Dependencies are inferred from the claim text.