发明授权
- 专利标题： Magnetic head with multiple reproducing elements each having magnetically coupled free layers, magnetic recording reproducing apparatus and magnetic head manufacturing method
- 专利标题（中）： 具有各自具有磁耦合自由层的多个再现元件的磁头，磁记录再现装置和磁头制造方法
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申请号： US14152974申请日： 2014-01-10
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公开(公告)号： US09171558B2公开(公告)日： 2015-10-27
- 发明人: Akihiko Takeo , Kazuto Kashiwagi , Kenichiro Yamada , Katsuhiko Koui , Tomomi Funayama
- 申请人： KABUSHIKI KAISHA TOSHIBA
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Patterson & Sheridan, LLP
- 优先权： JP2013-130909 20130621
- 主分类号： G11B5/39
- IPC分类号： G11B5/39 ; G11B5/31 ; G11B5/29 ; G11B5/48 ; G11B5/49
摘要：
A magnetic head includes a plurality of reproducing elements so that the magnetic head can acquire reproduction signals from a plurality of tracks at the same time. The magnetic head includes a first reproducing element, a first magnetic film formed on a first side wall of the first reproducing element with a first side wall insulating film interposed therebetween, a second magnetic film formed on a second side wall of the first reproducing element with a second side wall insulating film interposed therebetween, a second reproducing element electrically isolated from the first reproducing element and formed on the first magnetic film, a third magnetic film formed on the first magnetic film, and a fourth magnetic film formed on the first reproducing element and electrically isolated from the second reproducing element.
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