发明名称 |
Yoke structure with a step |
摘要 |
A planar top yoke in a magnetic write head is disclosed. The top yoke includes a backside region and a second pole tip region that is thinner than the backside region and forms a step at the ABS. Alternatively, a front section of the backside region includes a step with a thickness greater than the second pole tip region. Therefore, flux is directed from a thicker backside region toward the gap side of the second pole tip layer near the ABS. A lower flux density is formed at the top of the step at the ABS which reduces the flank field/gap field ratio and prevents unwanted erasure of adjacent data tracks. A high gap field is achieved while maintaining a low flank field during high write current conditions. The step recess from the ABS toward the backside region is about 0.2 to 2 microns.
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申请公布号 |
US7336441(B2) |
申请公布日期 |
2008.02.26 |
申请号 |
US20060493775 |
申请日期 |
2006.07.26 |
申请人 |
HEADWAY TECHNOLOGIES, INC. |
发明人 |
TAKANO KENICHI |
分类号 |
G11B5/39;G11B5/147;G11B5/33 |
主分类号 |
G11B5/39 |
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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