发明名称 |
Magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a self biased free layer |
摘要 |
A magnetoresistive sensor having a self biased free layer. The free layer is constructed upon an underlayer that has been treated by a surface texturing process that configures the underlayer with an anisotropic roughness that induces a magnetic anisotropy in the free layer. The treated layer underlying the free layer can be a spacer layer sandwiched between the free layer and pinned layer or can be a separate underlayer formed opposite the spacer layer. Alternatively, the texturing of an underlayer can be used to induce a magnetic anisotropy in a bias layer that is separated from the free layer by an orthogonal coupling layer. This self biasing of the free layer induced by texturing can also be used in conjunction with biasing from a hard-bias structure.
|
申请公布号 |
US2006221515(A1) |
申请公布日期 |
2006.10.05 |
申请号 |
US20050177990 |
申请日期 |
2005.07.07 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES |
发明人 |
CAREY MATTHEW J.;CHILDRESS JEFFREY R.;NIX JAMES L.;MAAT STEFAN;MCFADYEN IAN R. |
分类号 |
G11B5/127;G11B5/33 |
主分类号 |
G11B5/127 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|