Ferrite magnet

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United States of America Patent

PATENT NO 11569013
APP PUB NO 20190122792A1
SERIAL NO

16302704

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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This ferrite magnet has a magnetoplumbite structure and is characterized in that, when representing the composition ratios of the total of each metal element A, R, Fe and Me with expression (1) A1-xRx(Fe12-yMey)z, the Fe2+ content (m) in the ferrite magnet is greater than 0.1 mass % and less than 5.4 mass % (in expression (1), A is at least one element selected from Sr, Ba, Ca and Pb; R is at least one element selected from the rare-earth elements (including Y) and Bi, and includes at least La, and Me is Co, or Co and Zn). The invention makes it possible to achieve a ferrite magnet with increased Br.

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Patent Owner(s)

Patent OwnerAddress
TDK CORPORATIONTOKYO 103-6128

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagaoka, Junnichi Tokyo, JP 6 10
Taguchi, Hitoshi Tokyo, JP 31 320

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