A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FERRITE SINTERED MAGNET, FERRITE PARTICLE, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
To provide a ferrite sintered magnet and the like, excellent in Br and squareness.SOLUTION: There is provided a magnet that is a ferrite sintered magnet containing a ferrite phase having a magnetoplumbite-type crystal structure. The ferrite sintered magnet contains at least Ca, a metal element A, a metal element R, Bi, Fe, and a metal element M. The metal element A is at least one kind of element selected from the group consisting of Sr, Ba, and Pb, the metal element R is at least one kind of element selected from the group consisting of rare earth elements including Y and essentially includes La, the metal element M is at least one kind of element selected from the group consisting of Co, Ni, Zn, Al, Cu, and Cr, and essentially includes Co, and when an atonic ratio of the metal elements is expressed by formula (1), c, a, r, b, f, and m in formula (1) satisfy the following expressions (2) to (8).SELECTED DRAWING: None
【課題】Ｂｒ及び角型性に優れるフェライト焼結磁石等を提供すること。【解決手段】この磁石は、マグネトプランバイト型の結晶構造を有するフェライト相を含有するフェライト焼結磁石であって、Ｃａ、金属元素Ａ、金属元素Ｒ、Ｂｉ、Ｆｅ、及び、金属元素Ｍを少なくとも含み、金属元素Ａは、Ｓｒ、Ｂａ及びＰｂからなる群より選択される少なくとも１種の元素であり、金属元素Ｒは、Ｙを含む希土類元素からなる群より選択される少なくとも１種の元素であって、Ｌａを必ず含み、金属元素Ｍは、Ｃｏ、Ｎｉ、Ｚｎ、Ａｌ、Ｃｕ及びＣｒからなる群より選択される少なくとも１種の元素であって、Ｃｏを必ず含み、金属元素の原子比率を（１）式で表したときに、（１）式中、ｃ、ａ、ｒ、ｂ、ｆ及びｍが、下記（２）～（８）式を満たす。【選択図】なし
FERRITE SINTERED MAGNET, FERRITE PARTICLE, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
To provide a ferrite sintered magnet and the like, excellent in Br and squareness.SOLUTION: There is provided a magnet that is a ferrite sintered magnet containing a ferrite phase having a magnetoplumbite-type crystal structure. The ferrite sintered magnet contains at least Ca, a metal element A, a metal element R, Bi, Fe, and a metal element M. The metal element A is at least one kind of element selected from the group consisting of Sr, Ba, and Pb, the metal element R is at least one kind of element selected from the group consisting of rare earth elements including Y and essentially includes La, the metal element M is at least one kind of element selected from the group consisting of Co, Ni, Zn, Al, Cu, and Cr, and essentially includes Co, and when an atonic ratio of the metal elements is expressed by formula (1), c, a, r, b, f, and m in formula (1) satisfy the following expressions (2) to (8).SELECTED DRAWING: None
【課題】Ｂｒ及び角型性に優れるフェライト焼結磁石等を提供すること。【解決手段】この磁石は、マグネトプランバイト型の結晶構造を有するフェライト相を含有するフェライト焼結磁石であって、Ｃａ、金属元素Ａ、金属元素Ｒ、Ｂｉ、Ｆｅ、及び、金属元素Ｍを少なくとも含み、金属元素Ａは、Ｓｒ、Ｂａ及びＰｂからなる群より選択される少なくとも１種の元素であり、金属元素Ｒは、Ｙを含む希土類元素からなる群より選択される少なくとも１種の元素であって、Ｌａを必ず含み、金属元素Ｍは、Ｃｏ、Ｎｉ、Ｚｎ、Ａｌ、Ｃｕ及びＣｒからなる群より選択される少なくとも１種の元素であって、Ｃｏを必ず含み、金属元素の原子比率を（１）式で表したときに、（１）式中、ｃ、ａ、ｒ、ｂ、ｆ及びｍが、下記（２）～（８）式を満たす。【選択図】なし
FERRITE SINTERED MAGNET, FERRITE PARTICLE, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
フェライト焼結磁石、フェライト粒子、ボンド磁石、及び、回転電気機械
OMURA MASASHI (author)
2022-10-07
Patent
Electronic Resource
Japanese
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