发明授权
- 专利标题： Ferromagnetic material and a magnetic head using the same material
- 专利标题（中）： 铁磁材料和磁头使用相同的材料
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申请号： US665911申请日： 1984-10-29
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公开(公告)号： US4762755A公开(公告)日： 1988-08-09
- 发明人: Kazuo Shiiki , Noriyuki Kumasaka , Yoshihiro Shiroishi , Hitoshi Nakamura , Yoshihiro Hamakawa , Noritoshi Saito , Shigeo Aoki , Kiminari Shinagawa , Mitsuhiro Kudo
- 申请人： Kazuo Shiiki , Noriyuki Kumasaka , Yoshihiro Shiroishi , Hitoshi Nakamura , Yoshihiro Hamakawa , Noritoshi Saito , Shigeo Aoki , Kiminari Shinagawa , Mitsuhiro Kudo
- 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： JPX58-204834 19831102; JPX59-10077 19840125
- 主分类号： C22C38/02
- IPC分类号： C22C38/02 ; G11B5/127 ; G11B5/21 ; G11B5/31 ; H01F1/147 ; H01F10/14 ; B32B1/04
摘要：
A ferromagnetic material is composed of an iron alloy which contains 2 to 12% by weight of silicon and 5 to 25% by weight of at least one element selected from the group consisting of ruthenium, rhodium, palladium, iridium, platinum, gold and silver. This ferromagnetic material exhibits a high saturation flux density and good corrosion resistance. Excellent magnetic characteristics are obtained by a multilayered film which is obtained by alternatingly laminating the above ferromagnetic material and a spacer layer composed of other material. Further, a markedly increased recording density is exhibited by a magnetic head for perpendicular magnetic recording, when the end of the main pole is composed of the ferromagnetic material.
公开/授权文献
- US5794361A Footwear with a sole provided with a damper device 公开/授权日：1998-08-18
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