- 专利标题： Spin valve magnetoresistive transducers having permanent magnets
- 专利标题（中）： 磁阻电磁阀
-
申请号： EP97104638.8申请日： 1997-03-18
-
公开(公告)号： EP0797187A2公开(公告)日： 1997-09-24
- 发明人: Ravipati, Durga P.
- 申请人： READ-RITE CORPORATION
- 申请人地址： 345 Los Coches Street Milpitas California 95035 US
- 专利权人： READ-RITE CORPORATION
- 当前专利权人： READ-RITE CORPORATION
- 当前专利权人地址： 345 Los Coches Street Milpitas California 95035 US
- 代理机构： Körber, Wolfhart, Dr. rer.nat.
- 优先权： US619369 19960321
- 主分类号： G11B5/39
- IPC分类号： G11B5/39 ; G01R33/09
摘要：
A spin valve magnetoresistive sensor includes a substrate (1) and a layered structure formed on the substrate. The layered structure includes a pair of thin film layers (5, 12) of ferromagnetic material separated from each other by a nonmagnetic spacer. The direction of magnetization of one of the thin film layers is pinned by a first permanent magnet layer (6). A second permanent magnet layer (10) is located adjacent to the other of the thin film layers for longitudinal biasing purposes. The first permanent magnet layer (6) has significantly higher coercivity than the second permanent magnet layer (10).
公开/授权文献
信息查询
IPC分类:
