Ferrite material
AssigneeTDK Corporation
InventorsTomofumi Kuroda, Isao Nakahata, Masahiko Watanabe, Masahito Furukawa, Osamu Hasegawa, Takuya Aoki
Life of this patent
Estimating the term…
Abstract
It is an object to provide a ferrite material which has a higher saturation magnetic flux density and low core loss, both at 100° C. The ferrite material is composed of a sintered body containing Fe, Mn and Zn as main constituents at x, y and z % by mol in terms of Fe2O3, MnO and ZnO, respectively, and containing Li as an additive at v % by weight in terms of Li2CO3 based on the main constituents, wherein x=55.7 to 60, z=3 to 8.5, y=100−x−z, v=0.3 to 0.8, and x1≦x≦x2 (x1=52.9−0.1z+8.5v and x2=54.4−0.1z+8.5v).
Claims19
A ferrite material composed of a sintered body
- containing Fe, Mn and Zn as main constituents at x, y and z% by mol in terms of Fe2O3, MnO and ZnO, respectively, and
- containing Li as an additive at v % by weight in terms of Li2CO3 based on the main constituents, wherein
- x=55.7 to 60,
- z=3 to 8.5,
- y=100−x−z,
- v=0.3 to 0.8, and
- x1≦x≦x2 (x1=52.9−0.1z+8.5v and x2=54.4−0.1z+8.5v).
Dependencies are inferred from the claim text.