Invention Application
- Patent Title: CORE-SHELL MAGNETIC MATERIAL, METHOD FOR PRODUCING CORE-SHELL MAGNETIC MATERIAL, DEVICE, AND ANTENNA DEVICE
- Patent Title (中): 芯壳磁性材料,生产芯壳磁性材料的方法,器件和天线装置
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Application No.: US13259856Application Date: 2009-11-27
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Publication No.: US20120038532A1Publication Date: 2012-02-16
- Inventor: Maki Yonetsu , Tomohiro Suetsuna , Koichi Harada , Seiichi Suenaga , Shinji Murai , Yasuyuki Hotta , Toshihide Takahashi , Tomoko Eguchi , Noritsugu Shiokawa
- Applicant: Maki Yonetsu , Tomohiro Suetsuna , Koichi Harada , Seiichi Suenaga , Shinji Murai , Yasuyuki Hotta , Toshihide Takahashi , Tomoko Eguchi , Noritsugu Shiokawa
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee: KABUSHIKI KAISHA TOSHIBA
- Current Assignee Address: JP Minato-ku, Tokyo
- Priority: JP2009-078337 20090327; JP2009-269913 20091127
- International Application: PCT/JP2009/006447 WO 20091127
- Main IPC: H01Q1/48
- IPC: H01Q1/48 ; B32B5/16 ; H01F1/26 ; B05D7/00 ; B05D5/00

Abstract:
A core-shell magnetic material having an excellent characteristic in a high-frequency band, in particular a GHz-band and a high environment resistance is provided. The core-shell magnetic material includes: a magnetic member in which plural core-shell magnetic particles are bound by a binder made of a first resin; and a coating layer that is made of a second resin different from the first resin, a surface of the magnetic member being covered with the coating layer. The core-shell magnetic material is characterized in that the core-shell magnetic particle includes a magnetic metallic particle and a covering layer that covers at least part of a surface of the magnetic metallic particle, the magnetic metallic particle contains at least one magnetic metal selected from a group consisting of Fe, Co, and Ni, and the covering layer is made of an oxide, a nitride, or a carbide that contains at least one magnetic metal.
Public/Granted literature
- US08988301B2 Core-shell magnetic material, method for producing core-shell magnetic material, device, and antenna device Public/Granted day:2015-03-24
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