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Ferrite sintered magnet, ferrite particle, bonded magnet and rotating electric machine
This ferrite sintered magnet comprises ferrite phases having a magnetoplumbite type crystal structure. This magnet comprises an element R, an element M, Fe, Co, B, Mn and Cr, the element R is at least one element selected from rare earth elements including Y, the element M is at least one element selected from the group consisting of Ca, Sr and Ba, with Ca being an essential element, and when an atomic composition of metallic elements is represented by R1-xMxFem-yCoy, x, y and m satisfy formulae:0.2≤x≤0.8 (1)0.1≤y≤0.65 (2)3≤m<14 (3).Additionally, a content of B is 0.1 to 0.4% by mass in terms of B2O3, a content of Mn is 0.15 to 1.02% by mass in terms of MnO, and a content of Cr is 0.02 to 2.01% by mass in terms of Cr2O3.
Ferrite sintered magnet, ferrite particle, bonded magnet and rotating electric machine
This ferrite sintered magnet comprises ferrite phases having a magnetoplumbite type crystal structure. This magnet comprises an element R, an element M, Fe, Co, B, Mn and Cr, the element R is at least one element selected from rare earth elements including Y, the element M is at least one element selected from the group consisting of Ca, Sr and Ba, with Ca being an essential element, and when an atomic composition of metallic elements is represented by R1-xMxFem-yCoy, x, y and m satisfy formulae:0.2≤x≤0.8 (1)0.1≤y≤0.65 (2)3≤m<14 (3).Additionally, a content of B is 0.1 to 0.4% by mass in terms of B2O3, a content of Mn is 0.15 to 1.02% by mass in terms of MnO, and a content of Cr is 0.02 to 2.01% by mass in terms of Cr2O3.
Ferrite sintered magnet, ferrite particle, bonded magnet and rotating electric machine
MUROYA SHOGO (author) / MURAKAWA YOSHITAKA (author) / MORITA HIROYUKI (author) / IKEDA MASANORI (author)
2023-06-27
Patent
Electronic Resource
English
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