Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-03-20
2008-12-23
Kim, Paul D (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603110, C029S603130, C029S603180, C029S605000, C029S606000, C360S121000, C360S122000, C360S317000, C451S005000, C451S041000
Reexamination Certificate
active
07467461
ABSTRACT:
A method of manufacturing a magnetic write head for perpendicular magnetic recording. The method includes the formation of a write pole over a substrate. A non-magnetic side gap layer is deposited and an ion milling is used to remove a portion of the substrate to lower the floor of the substrate. A sacrificial fill layer can then be deposited. A chemical mechanical polishing process can be used to remove the mask structure remaining as a remnant of the formation of the write pole, and then the sacrificial fill layer can be removed. A non-magnetic, electrically conductive material can be deposited to form a tailing gap, an a magnetic material can then be deposited to form a wrap around trailing shield.
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Bonhôte Christian René
Le Quang
Robertson Neil Leslie
Van Der Heijden Petrus Antonius
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D
Zilka-Kotab, PC
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