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US 12,695,012 B2Granted
Metal magnetic powder, composite magnetic body, and electronic component
AssigneeTDK Corporation
InventorsIsao Kanada, Hiroshi Ito, Kyohei Takahashi
Life of this patent
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Abstract
A metal magnetic powder includes: metal nanoparticles having an average particle size (D50) is 1 nm to 100 nm, and a main phase of hcp-Co; and an additive elements α including at least one of Fe, Ni, and Cu.
Claims7
A metal magnetic powder, comprising:
- metal nanoparticles having an average particle size (D50) is 1 nm to 100 nm, and a main phase of hexagonal close packing Co;
- and
- an additive element α including at least one of Fe, Ni, and Cu, wherein
- a weight ratio of the total content of the additive element α to the content of Co is 10 ppm to 2000 ppm, and
- Co occupies 80 wt % or more in the metal magnetic powder.
2 more elements
A composite magnetic body, comprising:
- metal nanoparticles having an average particle size (D50) is 1 nm to 100 nm, and a main phase of hexagonal close packing Co;
- a resin;
- and
- an additive element α including at least one of Fe, Ni, and Cu, wherein
- a weight ratio of the total content of the additive element α to the content of Co is 10 ppm to 2000 ppm, and
- Co occupies 80 wt % or more in the metal magnetic powder.
3 more elements
Dependencies are inferred from the claim text.