Invention Grant
US08444872B2 Magnetic iron oxide particle, magnetic material, and radio wave absorber
有权
磁性氧化铁颗粒，磁性材料和无线电波吸收体
- Patent Title: Magnetic iron oxide particle, magnetic material, and radio wave absorber
- Patent Title (中): 磁性氧化铁颗粒，磁性材料和无线电波吸收体
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Application No.: US12451731Application Date: 2008-05-30
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Publication No.: US08444872B2Publication Date: 2013-05-21
- Inventor: Shin-ichi Ohkoshi , Shunsuke Sakurai , Takenori Yorinaga , Kazuyuki Matsumoto , Shinya Sasaki
- Applicant: Shin-ichi Ohkoshi , Shunsuke Sakurai , Takenori Yorinaga , Kazuyuki Matsumoto , Shinya Sasaki
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: The University of Tokyo,Dowa Electronics Materials Co., Ltd.
- Current Assignee: The University of Tokyo,Dowa Electronics Materials Co., Ltd.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2007-146182 20070531; JP2007-260071 20071003
- International Application: PCT/JP2008/059976 WO 20080530
- International Announcement: WO2008/149785 WO 20081211
- Main IPC: H01F1/00
- IPC: H01F1/00 ; H01F1/37 ; C01G51/00 ; C01G49/00
Abstract:
Disclosed is a magnetic material having high Hc and High Curie point, which is capable of controlling such magnetic characteristics without requiring rare or expensive raw materials. Specifically disclosed is a magnetic material composed of particles of a magnetic iron oxide which is represented by the following general formula: ε-AxByFe2−x−yO3 or ε-AxByCzFe2−x−y−zO3 (wherein A, B and C each represents a metal excluding Fe and different from each other, satisfying 0
Public/Granted literature
- US20100171066A1 MAGNETIC IRON OXIDE PARTICLE, MAGNETIC MATERIAL, AND RADIO WAVE ABSORBER Public/Granted day:2010-07-08
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