Magnetic core and magnetic device
AssigneeTDK Corporation
InventorsKazuhiro YOSHIDOME, Satoko MORI, Hiroyuki MATSUMOTO
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Abstract
A magnetic core includes metal magnetic particles. A total area percentage of the metal magnetic particles in a cross section of the magnetic core is 75% or more and 90% or less. The metal magnetic particles include first particles whose Haywood diameters in the cross section of the magnetic core are 3 μm or more and second particles whose Haywood diameters in the cross section of the magnetic core are less than 3 μm. The second particles include two or more types of small particles with different compositions of films existing on their particle surfaces.
Claims4
A magnetic core comprising metal magnetic particles, wherein
- a total area percentage of the metal magnetic particles in a cross section of the magnetic core is 75% or more and 90% or less,
- the metal magnetic particles include:
- first particles whose Haywood diameters in the cross section of the magnetic core are 3 μm or more;
- and
- second particles whose Haywood diameters in the cross section of the magnetic core are less than 3 μm, and
- the second particles comprise two or more types of small particles with different compositions of films existing on their particle surfaces.
Dependencies are inferred from the claim text.