Coil component and LC composite component
AssigneeTDK Corporation
InventorsAkihiro Harada, Yoshihiro Shinkai, Kyohei Takahashi, Tomoya Hanai
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Abstract
A coil component includes a coil and a composite magnetic material containing magnetic particles. The magnetic particles have an average minor-axis length of more than 5.0 nm and 50 nm or less and an average aspect ratio of 2.0 or more and 10.0 or less. The magnetic particles are orientated substantially perpendicularly to a central axis of the coil and are orientated randomly within a perpendicular plane to the central axis of the coil. The composite magnetic material has a saturation magnetization σs of 80.0 emu/g or more.
Claims16
A coil component comprising a coil and a composite magnetic material containing magnetic particles, wherein
- the magnetic particles have an average minor-axis length of more than 5.0 nm and 50 nm or less and an average aspect ratio of 2.0 or more and 10.0 or less,
- a ratio of the magnetic particles having a major axis oriented at an angle in a range of from −30° to 30° to a horizontal axis to all of the magnetic particles is 70% or more based on particle number, the horizontal axis being perpendicular to a central axis of the coil, and
- the magnetic particles are orientated randomly within a perpendicular plane to the central axis of the coil, and
- the composite magnetic material has a saturation magnetization σs of 80.0 emu/g or more.
An LC composite component, comprising:
- a coil part including a coil and a composite magnetic material containing magnetic particles;
- and
- a capacitor part including a dielectric layer,
- wherein:
- the magnetic particles have an average minor-axis length of more than 5.0 nm and 50 nm or less and an average aspect ratio of 2.0 or more and 10.0 or less,
- a ratio of the magnetic particles having a major axis oriented at an angle in a range of from −30° to 30° to a horizontal axis to all of the magnetic particles is 70% or more based on particle number, the horizontal axis being perpendicular to a central axis of the coil,
- the magnetic particles are orientated randomly within a perpendicular plane to the central axis of the coil, and
- the composite magnetic material has a saturation magnetization σs of 80 emu/g or more.
Dependencies are inferred from the claim text.