发明授权
- 专利标题： Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density
- 专利标题（中）： 薄膜磁头具有至少部分地由具有高饱和磁通密度的材料制成的至少一个磁芯构件
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申请号： US525666申请日： 1990-05-21
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公开(公告)号： US5126907A公开(公告)日： 1992-06-30
- 发明人: Yoshihiro Hamakawa , Isamu Yuito , Hisashi Takano , Naoki Koyama , Eijin Moriwaki , Shinobu Sasaki , Kazuo Shiiki
- 申请人： Yoshihiro Hamakawa , Isamu Yuito , Hisashi Takano , Naoki Koyama , Eijin Moriwaki , Shinobu Sasaki , Kazuo Shiiki
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-128818 19890524; JPX1-160742 19890626
- 主分类号： G11B5/31
- IPC分类号： G11B5/31
摘要：
A thin film magnetic head has a first magnetic core member carried by a substrate, a gap layer formed on the first magnetic core member, and a second magnetic core member formed in a spaced relation with the first magnetic core member. The second magnetic core member is coupled to the first magnetic core member to form a magnetic path and to have an end portion of the gap layer sandwiched by gap defining portions of the first and second magnetic core members. A coil conductor is wound about the magnetic path. In one embodiment, the first magnetic core member includes a first magnetic layer made of a magnetic material having stable magnetic properties during heat treatment and the second magnetic core member includes a second magnetic layer made of a material having a saturation flux density higher than that of the material of the first magnetic core member.
公开/授权文献
- US5618412A Fixed-bed bioreactor and carrier body for purifying fluids 公开/授权日：1997-04-08
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