发明申请
US20020024777A1 Magnetic recording head, a magnetic reproducing head, a magnetic recording apparatus, and a magnetic reproducing apparatus
失效

基本信息:
- 专利标题: Magnetic recording head, a magnetic reproducing head, a magnetic recording apparatus, and a magnetic reproducing apparatus
- 专利标题(中):磁记录头,磁再现头,磁记录装置和磁再现装置
- 申请号:US09938611 申请日:2001-08-27
- 公开(公告)号:US20020024777A1 公开(公告)日:2002-02-28
- 发明人: Tomomi Funayama , Kohichi Tateyama , Michiko Hara , Masatoshi Yoshikawa , Hiroaki Yoda
- 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
- 优先权: JPP2000-263840 20000831
- 主分类号: G11B005/39
- IPC分类号: G11B005/39
摘要:
A magnetic recording head, a magnetic reproducing head, a magnetic recording apparatus comprising the magnetic recording head, and a magnetic reproducing apparatus comprising the magnetic reproducing head are described. The magnetic reproducing head having a magnetic gap at a medium-facing surface and includes a pair of magnetic yokes of ferromagnetic material, a magnetoresistance effect film, and a pair of biasing films. One of the pair of magnetic yokes has a magnetic tip at the medium-facing surface and also a rear portion recessed from the medium-facing surface and magnetically coupled to the magnetic tip. The magnetic tip has a first width in a track width direction at the medium-facing surface, and the rear portion has a second width in the track width direction wider than the first width. The magnetoresistance effect film is recessed from the medium-facing surface and is magnetically coupled to the pair of magnetic yokes of ferromagnetic material. The pair of biasing films are recessed from the medium-facing surface and one of the pair of biasing films comprises a hard magnetic material layer disposed adjacent to the rear portion or an antiferromagnetic material layer disposed in contact with the rear portion. The magnetic tip may be provided with appropriate volume of the magnetic biasing from the magnetic biasing film and magnetic domains in the magnetic tip may be sufficiently controlled.
摘要(中):
描述了磁记录头,磁再现头,包括磁记录头的磁记录装置和包括磁再现头的磁再现装置。 该磁性再现头在介质表面具有磁隙,并且包括一对铁磁材料的磁轭,磁阻效应膜和一对偏置膜。 一对磁轭中的一个在面向介质的表面上具有磁性尖端,并且还具有从中间面向表面凹陷并且磁耦合到磁头的后部。 磁头在中间面上具有沿轨道宽度方向的第一宽度,并且后部具有比第一宽度宽的轨道宽度方向上的第二宽度。 磁阻效应膜从面向介质的表面凹陷并且磁耦合到铁磁材料的一对磁轭。 一对偏压薄膜从面向中间的表面凹陷,并且一对偏置薄膜中的一个偏置薄膜包括邻近后部设置的硬磁材料层或与后部相接触设置的反铁磁材料层。 磁头可以设置有适当体积的来自磁偏置膜的磁偏置,并且可以充分地控制磁头中的磁畴。