发明申请
US20060221515A1 Magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a self biased free layer
失效
使用倾斜蚀刻底层的磁性读取传感器，用于在自偏压自由层中诱导单轴磁各向异性
- 专利标题： Magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a self biased free layer
- 专利标题（中）： 使用倾斜蚀刻底层的磁性读取传感器，用于在自偏压自由层中诱导单轴磁各向异性
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申请号： US11177990申请日： 2005-07-07
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公开(公告)号： US20060221515A1公开(公告)日： 2006-10-05
- 发明人: Matthew Carey , Jeffrey Childress , James Nix , Stefan Maat , Ian McFadyen
- 申请人： Matthew Carey , Jeffrey Childress , James Nix , Stefan Maat , Ian McFadyen
- 专利权人： HITACHI GLOBAL STORAGE TECHNOLOGIES
- 当前专利权人： HITACHI GLOBAL STORAGE TECHNOLOGIES
- 主分类号： G11B5/127
- IPC分类号： G11B5/127 ; G11B5/33
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.
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