公开(公告)号：US20240186037A1

公开(公告)日：2024-06-06

申请号：US18277339

申请日：2022-03-22

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Nobuyoshi IMAOKA ,  Kimihiro OZAKI ,  Tatsuya KON

IPC: H01F1/059

CPC classification number: H01F1/059

Abstract: The present invention addresses the problem of providing: a novel magnetic material for high frequency use, the magnetic material solving problems such as eddy current loss since the magnetic material has higher electrical resistivity than metal magnetic materials, while having higher magnetic permeability than ferrite magnetic materials; and a method for producing this magnetic material for high frequency use.
The present invention uses a rare earth-iron-M-nitrogen magnetic material (wherein M represents at least one element that is selected from among Ti, V, Mo, Nb, W, Si, Al, Mn and Cr) which is a nitride magnetic material that has a controlled crystal structure and a controlled composition.