发明名称 |
Method for manufacturing a magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in hard magnetic bias layers |
摘要 |
A magnetoresistive sensor having a hard bias layer with an engineered magnetic anisotropy in a direction substantially parallel with the medium facing surface. The hard bias layer may be constructed of CoPt, CoPtCr or some other magnetic material and is deposited over an underlayer that has been ion beam etched. The ion beam etch has been performed at an angle with respect to normal in order to induce anisotropic roughness on its surface for example in form of oriented ripples or facets. The anisotropic roughness induces a uniaxial magnetic anisotropy substantially parallel to the medium facing surface in the hard magnetic bias layers deposited there over.
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申请公布号 |
US7363699(B2) |
申请公布日期 |
2008.04.29 |
申请号 |
US20050097846 |
申请日期 |
2005.03.31 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B. V. |
发明人 |
CAREY MATTHEW JOSEPH;CHILDRESS JEFFREY ROBINSON;FULLERTON ERIC EDWARD;MAAT STEFAN |
分类号 |
G11B5/127;H04R31/00 |
主分类号 |
G11B5/127 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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