Additive gap process to define trailing and side shield gap...

Details Additive gap process to define trailing and side shield gap... Additive gap process to define trailing and side shield gap...

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.

REFERENCES:
patent: 7002778 (2006-02-01), Yazawa
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patent: 2005/0243463 (2005-11-01), Fontana et al.
patent: 2005/0259355 (2005-11-01), Gao et al.

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