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FERRITE SINTERED MAGNET, FERRITE PARTICLES, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
A ferrite sintered magnet has a ferrite phase having a magnetoplumbite-type crystal structure, and contains at least a metal element A, a metal element R, Fe, Co, Zn, and B. The element A is at least one kind of element selected from the group consisting of Sr, Ba, Ca, and Pb, and essentially includes Ca. The element R is at least one kind of element selected from the group consisting of Bi and rare-earth elements including Y, and essentially includes La. Atomic ratios of the metal elements satisfy the following expressions.A1-rRrFexCoyZnz (1)0.40≤r≤0.70 (2)8.20≤x≤9.34 (3)0.05
FERRITE SINTERED MAGNET, FERRITE PARTICLES, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
A ferrite sintered magnet has a ferrite phase having a magnetoplumbite-type crystal structure, and contains at least a metal element A, a metal element R, Fe, Co, Zn, and B. The element A is at least one kind of element selected from the group consisting of Sr, Ba, Ca, and Pb, and essentially includes Ca. The element R is at least one kind of element selected from the group consisting of Bi and rare-earth elements including Y, and essentially includes La. Atomic ratios of the metal elements satisfy the following expressions.A1-rRrFexCoyZnz (1)0.40≤r≤0.70 (2)8.20≤x≤9.34 (3)0.05
FERRITE SINTERED MAGNET, FERRITE PARTICLES, BONDED MAGNET, AND ROTATING ELECTRICAL MACHINE
OHMURA MASASHI (author) / NAGAOKA JUNICHI (author) / MUROYA SHOGO (author) / ABE TAKUMA (author) / SATO JO (author)
2022-05-19
Patent
Electronic Resource
English
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