Magnetic head having thermally assisted write head with...

Details Magnetic head having thermally assisted write head with... Magnetic head having thermally assisted write head with...

2006-02-14

2006-02-14

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

06999277

ABSTRACT:
A magnetic head including a media heating device. Following the fabrication of the heating device, a sacrificial layer of material is deposited to protect the heating device during subsequent process steps. Thereafter, write head components, such as write head induction coils and/or a P1 pole pedestal are fabricated above the heating device, and the sacrificial layer is substantially consumed in protecting the heating device during the aggressive etching and milling steps used to create those components. Further components, including a second magnetic pole are thereafter fabricated to complete the fabrication of the write head portion of the magnetic head. The sacrificial layer may be comprised of alumina, or a material such as NiFe that can act as a seed layer for a subsequent head components such as the P1 pole pedestal.

REFERENCES:
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patent: 2001/0006435 (2001-07-01), Ichihara et al.
patent: 2001/0006436 (2001-07-01), Akiyama et al.
patent: 2001/0017820 (2001-08-01), Akiyama et al.
patent: 2004/0240109 (2004-12-01), Hamann et al.
patent: 1037198 (2000-09-01), None
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patent: 2042611 (1990-02-01), None
patent: 2002175602 (2002-06-01), None
IBM Technical Disclosure Bulletin, Vo. 39, No. 07 Jul. 1996, entitled: Data Recording at Ultra High Density.

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