| 发明名称 |
MAGNETIC SENSOR HAVING A WEAK MAGNETIC SPACER |
| 摘要 |
A magnetic sensor having improved magnetic free layer stability and signal resolution. The magnetic sensor includes a weak magnetic spacer located between a magnetic free layer and a trailing magnetic shield. The weak magnetic spacer provides a desired weak magnetic coupling between the magnetic free layer and the trailing shield. This weak magnetic coupling reduces signal side lobe, thereby improving signal resolution. The weak magnetic spacer can be an alloy that includes magnetic and nonmagnetic elements. The magnetic elements can be one or more of Co, Fe and Ni. The nonmagnetic elements can be one or more of Hf, Ta, Nb and Zr. |
| 申请公布号 |
US2016351212(A1) |
申请公布日期 |
2016.12.01 |
| 申请号 |
US201514726516 |
申请日期 |
2015.05.30 |
| 申请人 |
HGST Netherlands B.V. |
发明人 |
Okawa Norihiro;Komagaki Koujiro |
| 分类号 |
G11B5/31;G11B5/39 |
主分类号 |
G11B5/31 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic sensor, comprising:
a magnetic free layer structure; a magnetic shield structure; and a weak magnetic spacer located between the magnetic free layer structure and the magnetic shield structure, wherein the weak magnetic spacer has a magnetic flux density of 0.05 Tesla to 0.4 Tesla. |
| 地址 |
Amsterdam NL |
