FERRITE SINTERED MAGNET AND MANUFACTURING METHOD THEREFOR

FERRITE SINTERED MAGNET AND MANUFACTURING METHOD THEREFOR

A ferrite sintered magnet represented by A1−xRx(Fe12−yCoy)zO19 in terms of atomic number ratio. A is at least one selected from a group made of Sr, Ba and Pb. R is La only or La and at least one selected from a group made of Bi and rare earth elements. 0.14≤x≤0.22, 11.60≤(12−y)×z≤11.99, and 0.13≤y×z...

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Bibliographische Detailangaben
Hauptverfasser: IKEDA, Masanori, MURAKAWA, Yoshitaka, MORITA, Hiroyuki, ABE, Takuma, MUROYA, Shogo
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Zusammenfassung:A ferrite sintered magnet represented by A1−xRx(Fe12−yCoy)zO19 in terms of atomic number ratio. A is at least one selected from a group made of Sr, Ba and Pb. R is La only or La and at least one selected from a group made of Bi and rare earth elements. 0.14≤x≤0.22, 11.60≤(12−y)×z≤11.99, and 0.13≤y×z≤0.17 are satisfied. 0.500≤Mc≤0.710 is satisfied in which Mc is CaO content in mass % converted from a content of Ca included in the ferrite sintered magnet. 0.410≤Ms≤0.485 is satisfied in which Ms is SiO2 content in mass % converted from a content of Si included in the ferrite sintered magnet.