发明授权
US07054120B2 Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect
失效
具有垂直记录介质和头部的磁性装置具有使用隧道效应的多层再现元件
- 专利标题： Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect
- 专利标题（中）： 具有垂直记录介质和头部的磁性装置具有使用隧道效应的多层再现元件
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申请号： US10700500申请日： 2003-11-05
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公开(公告)号： US07054120B2公开(公告)日： 2006-05-30
- 发明人: Ryoichi Nakatani , Masahiro Kitada , Naoki Koyama , Isamu Yuito , Hisashi Takano , Eijin Moriwaki , Mikio Suzuki , Masaaki Futamoto , Fumio Kugiya , Yoshibumi Matsuda , Kazuo Shiiki , Yoshinori Miyamura , Kyo Akagi , Takeshi Nakao , Hirotsugu Fukuoka , Takayuki Munemoto , Tokuho Takagaki , Toshio Kobayashi , Hideo Tanabe , Noboru Shimizu
- 申请人： Ryoichi Nakatani , Masahiro Kitada , Naoki Koyama , Isamu Yuito , Hisashi Takano , Eijin Moriwaki , Mikio Suzuki , Masaaki Futamoto , Fumio Kugiya , Yoshibumi Matsuda , Kazuo Shiiki , Yoshinori Miyamura , Kyo Akagi , Takeshi Nakao , Hirotsugu Fukuoka , Takayuki Munemoto , Tokuho Takagaki , Toshio Kobayashi , Hideo Tanabe , Noboru Shimizu
- 申请人地址： JP Kanagawa-Ken
- 专利权人： Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人： Hitachi Global Storage Technologies Japan, Ltd.
- 当前专利权人地址： JP Kanagawa-Ken
- 代理机构： Mattingly, Stanger, Malur & Brundidge, P.C.
- 优先权： JP2-148643 19900608; JP2-218894 19900822; JP2-218904 19900822; JP2-242341 19900914
- 主分类号： G11B5/39
- IPC分类号： G11B5/39
摘要：
The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.
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