Invention Grant
- Patent Title: Ferrite magnetic material
- Patent Title (中): 铁氧体磁性材料
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Application No.: US13382211Application Date: 2010-07-05
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Publication No.: US09272955B2Publication Date: 2016-03-01
- Inventor: Junichi Nagaoka , Takahiro Mori , Hiroyuki Morita , Yoshihiko Minachi
- Applicant: Junichi Nagaoka , Takahiro Mori , Hiroyuki Morita , Yoshihiko Minachi
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Drinker Biddle & Reath LLP
- Priority: JP2009-161927 20090708
- International Application: PCT/JP2010/061403 WO 20100705
- International Announcement: WO2011/004791 WO 20110113
- Main IPC: H01F1/10
- IPC: H01F1/10 ; C04B35/26 ; C01G49/00 ; C04B35/626 ; C04B35/632 ; H01F1/11

Abstract:
An object of the present invention is to provide a ferrite magnetic material capable of providing a permanent magnet in which high Br and HcJ are kept, and which has a high Hk/HcJ. A ferrite magnetic material in accordance with a preferred embodiment has a ferrite phase having a hexagonal structure and has a main composition represented by Ca1-w-x-yRwSrxBayFezMmO19 (R is at least one element of rare earth elements (including Y) essentially including La, and Bi, and M is at least one element of Co, Mn, Mg, Ni, Cu, and Zn essentially including Co), where 0.25
Public/Granted literature
- US20120161910A1 FERRITE MAGNETIC MATERIAL Public/Granted day:2012-06-28
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