发明申请
- 专利标题: CORE-SHELL MAGNETIC MATERIAL, METHOD OF MANUFACTURING CORE-SHELL MAGNETIC MATERIAL, DEVICE, AND ANTENNA DEVICE
- 专利标题(中): 核心磁性材料,制造芯壳磁性材料的方法,器件和天线装置
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申请号: US12412249申请日: 2009-03-26
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公开(公告)号: US20100060539A1公开(公告)日: 2010-03-11
- 发明人: Tomohiro Suetsuna , Kouichi Harada , Maki Yonetsu , Seiichi Suenaga
- 申请人: Tomohiro Suetsuna , Kouichi Harada , Maki Yonetsu , Seiichi Suenaga
- 优先权: JP2008-229296 20080908
- 主分类号: B05D5/00
- IPC分类号: B05D5/00 ; B32B5/16 ; H01F1/04 ; H01Q1/00
摘要:
The present invention provides a core-shell magnetic material having an excellent characteristic in a high frequency band, particularly, in a GHz band. The core-shell magnetic material includes: core-shell magnetic particles including magnetic metal particles and an oxide coating layer, the magnetic metal particle containing magnetic metal selected from the group of Fe, Co, and Ni, nonmagnetic metal selected from the group of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, a rare-earth element, Ba, and Sr, and an element selected from carbon and nitrogen, and the oxide coating layer being made of an oxide containing at least one nonmagnetic metal as one of the components of the magnetic metal particle; and oxide particles existing at least a part between the magnetic metal particles and containing nonmagnetic metal selected from the group of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, a rare-earth element, Ba, and Sr, and in which nonmagnetic metal/magnetic metal (atomic ratio) in the particles is higher than that in the oxide coating layer.
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