发明名称 |
Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head |
摘要 |
A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width W<SUB>C </SUB>of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: -0.15*W<SUB>T</SUB><=W<SUB>C</SUB><12 WHERE W<SUB>T </SUB>is a track width and a unit of W<SUB>C </SUB>and W<SUB>T </SUB>is nanometer.
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申请公布号 |
US7443633(B2) |
申请公布日期 |
2008.10.28 |
申请号 |
US20050300277 |
申请日期 |
2005.12.15 |
申请人 |
TDK CORPORATION;SAE MAGNETICS (H.K.) LTD. |
发明人 |
TAGAMI KATSUMICHI;HARADA TATSUYA;MATSUKUMA HIROKI;ROPPONGI TETSUYA;AOKI SUSUMU;FUKUDA KAZUMASA;MATONO NAOTO |
分类号 |
G11B5/127 |
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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