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CALCINED FERRITE, AND PRODUCTION METHOD OF CALCINED FERRITE
To provide a calcined ferrite which reduces the amount of Co used and has a high saturation magnetization σs and a high anisotropy field HA, and a production method of the calcined ferrite.SOLUTION: A calcined ferrite is represented by the general formula: Ca1-x-y Rx Ay Fe2n-z Coz, which represents the atomic ratio of the metal elements Ca, R, A, Fe and Co (where R is at least one of the rare earth elements and essentially includes La; and A is Sr and/or Ba). In the formula, x, y, z and n (where 2n is the molar ratio and represented by 2n=(Fe+Co)/(Ca+R+A)) satisfy 0.2≤1-x-y≤0.5, 0.35<11.SELECTED DRAWING: None
【課題】 Coの使用量を削減し、高い飽和磁化σsと高い異方性磁界HAとを有するフェライト仮焼体およびフェライト仮焼体の製造方法を提供することである。【解決手段】 Ca、R、A、Fe及びCoの金属元素（ただし、Rは希土類元素の少なくとも1種であってLaを必須に含む元素、AはSrおよび／またはBa）の原子比を示す一般式：Ca1-x-yRxAyFe2n-zCozにおいて、前記x、y及びz、並びにn(ただし、2nはモル比であって、2n＝(Fe+Co)/(Ca+R+A)で表される)が、0.2≦1-x-y≦0.5、0.35＜x≦0.5、0.1≦y≦0.4、1-x-y≧y、0＜z≦0.25、及び8≦2n-z＜11、を満足するフェライト仮焼体。【選択図】なし
CALCINED FERRITE, AND PRODUCTION METHOD OF CALCINED FERRITE
To provide a calcined ferrite which reduces the amount of Co used and has a high saturation magnetization σs and a high anisotropy field HA, and a production method of the calcined ferrite.SOLUTION: A calcined ferrite is represented by the general formula: Ca1-x-y Rx Ay Fe2n-z Coz, which represents the atomic ratio of the metal elements Ca, R, A, Fe and Co (where R is at least one of the rare earth elements and essentially includes La; and A is Sr and/or Ba). In the formula, x, y, z and n (where 2n is the molar ratio and represented by 2n=(Fe+Co)/(Ca+R+A)) satisfy 0.2≤1-x-y≤0.5, 0.35<11.SELECTED DRAWING: None
【課題】 Coの使用量を削減し、高い飽和磁化σsと高い異方性磁界HAとを有するフェライト仮焼体およびフェライト仮焼体の製造方法を提供することである。【解決手段】 Ca、R、A、Fe及びCoの金属元素（ただし、Rは希土類元素の少なくとも1種であってLaを必須に含む元素、AはSrおよび／またはBa）の原子比を示す一般式：Ca1-x-yRxAyFe2n-zCozにおいて、前記x、y及びz、並びにn(ただし、2nはモル比であって、2n＝(Fe+Co)/(Ca+R+A)で表される)が、0.2≦1-x-y≦0.5、0.35＜x≦0.5、0.1≦y≦0.4、1-x-y≧y、0＜z≦0.25、及び8≦2n-z＜11、を満足するフェライト仮焼体。【選択図】なし
CALCINED FERRITE, AND PRODUCTION METHOD OF CALCINED FERRITE
フェライト仮焼体、フェライト仮焼体の製造方法
KOBAYASHI YOSHINORI (author)
2024-03-28
Patent
Electronic Resource
Japanese
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