发明名称 |
METHOD OF MANUFACTURING MOLD FOR FORMING FILM, METHOD OF FORMING MAIN POLE LAYER IN PERPENDICULAR MAGNETIC RECORDING HEAD, AND PERPENDICULAR MAGNETIC RECORDING HEAD |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording head with improved writability and a sharper neck transition having a main pole layer including a yoke that has vertical sidewalls and a write pole that has inclined sidewalls. <P>SOLUTION: An insulation layer mold frame has a negative differential bevel angle dBA by employing a two-mask process. A first photoresist layer is patterned and etched to form a rectangular trench 37 in an insulation layer 31 formed of alumina. A second photoresist layer is patterned into a yoke shape opening that is partially superimposed over the rectangular trench 37. After a second RIE process, the yoke opening adjoins the trench 37 at a neck transition point along each long trench side. The volume of a magnetic material in the yoke adjacent to the neck is thereby maximized. The dimension control of the main pole layer can be conducted independently of ABS positioning errors. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
申请公布号 |
JP2009004079(A) |
申请公布日期 |
2009.01.08 |
申请号 |
JP20080163663 |
申请日期 |
2008.06.23 |
申请人 |
HEADWAY TECHNOLOGIES INC |
发明人 |
LEE JIUN-TING;HUANG SHIWEN;DOVEK MORIS |
分类号 |
G11B5/31 |
主分类号 |
G11B5/31 |
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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