A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An object of the present invention is to provide, in order to deal with a high frequency band in which radio waves are expected to be increasingly used hereafter, a magnetoplumbite-type hexagonal ferrite material having significantly improved high-frequency property of magnetic permeability. Specifically, a magnetoplumbite-type hexagonal ferrite is represented by a composition formula: A(1-X)BxCx(D1yD2y)Fe(12-x-2y)O19 (where x: 0.1 to 0.3, y:0.1 to 0.5), wherein A is any one of Ba2+, Sr2+ and Ca2+, B is any one of La3+ and Nd3+, C and D1 are any one or more of Co2+, Mn2+, Mg2+, Zn2+, Cu2+ and Ni2+, and D2 is any one of Ti4+ and Zr4+.
An object of the present invention is to provide, in order to deal with a high frequency band in which radio waves are expected to be increasingly used hereafter, a magnetoplumbite-type hexagonal ferrite material having significantly improved high-frequency property of magnetic permeability. Specifically, a magnetoplumbite-type hexagonal ferrite is represented by a composition formula: A(1-X)BxCx(D1yD2y)Fe(12-x-2y)O19 (where x: 0.1 to 0.3, y:0.1 to 0.5), wherein A is any one of Ba2+, Sr2+ and Ca2+, B is any one of La3+ and Nd3+, C and D1 are any one or more of Co2+, Mn2+, Mg2+, Zn2+, Cu2+ and Ni2+, and D2 is any one of Ti4+ and Zr4+.
Magnetoplumbite-type hexagonal ferrite
HIROSE KEITA (author)
2016-05-10
Patent
Electronic Resource
English
Hexagonal magnetoplumbite permanent magnetic ferrite material and preparation method thereof
| European Patent Office | 2020
| European Patent Office | 2021
Magnetoplumbite type barium ferrite and preparation method thereof
| European Patent Office | 2024
Magnetoplumbite-type ferrite magnetic material and segment-type permanent magnet derived therefrom
| European Patent Office | 2018
MAGNETOPLUMBITE-TYPE FERRITE MAGNETIC MATERIAL AND SEGMENT-TYPE PERMANENT MAGNET DERIVED THEREFROM
| European Patent Office | 2018