Magnetic metal particle aggregate and radio wave absorber
AssigneeKabushiki Kaisha Toshiba
InventorsToshihide TAKAHASHI, Tomohiro Suetsuna, Koichi Harada, Seiichi Suenaga, Tomoko Eguchi
Life of this patent
Estimating the term…
Abstract
A magnetic metal particle aggregate includes a plurality of magnetic metal particles including at least one magnetic metal selected from a first group consisting of Fe, Co, and Ni. The plurality of magnetic metal particles are partly bound with each other, and an average particle diameter of the plurality of magnetic metal particles is 10 nm or more and 50 nm or less. The magnetic metal particle aggregate has an average particle diameter of 15 nm or more and 200 nm or less.
Claims14
A magnetic metal particle aggregate comprising:
- a plurality of magnetic metal particles including at least one magnetic metal selected from a first group consisting of Fe, Co, and Ni, the plurality of magnetic metal particles being partly bound with each other, an average particle diameter of the plurality of magnetic metal particles being 10 nm or more and 50 nm or less, wherein the magnetic metal particle aggregate has an average particle diameter of 15 nm or more and 200 nm or less.
A magnetic metal particle aggregate comprising:
- a plurality of magnetic metal particles, each of the plurality of magnetic metal particles including
- a core portion including at least one magnetic metal selected from a first group consisting of Fe, Co, and Ni, and at least one metal selected from a second group consisting of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, a rare-earth metal element, Ba, and Sr, and
- a coating layer coating the core portion and including at least one metal selected from the second group, the metal being included in the core portion,
- wherein the magnetic metal particles are partly bound with each other and have an average particle diameter of 10 nm or more and 50 nm or less;
- and
- the magnetic metal particle aggregate has an average particle diameter of 15 nm or more and 200 nm or less.
Dependencies are inferred from the claim text.