Magnetic head for perpendicular recording having stepped...

Details Magnetic head for perpendicular recording having stepped... Magnetic head for perpendicular recording having stepped...

2007-12-26

2011-11-01

Cao, Allen (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

08049989

ABSTRACT:
Methods and structures for the fabrication of a thin film, perpendicular recording write head are disclosed. The fabrication involves the deposition of two different oxide layers which have mutually high etch selectivities. This characteristic allows a write pole structure to be built wherein the track width is independent of the location of the flare point. The process also produces a structure wherein the throat height of the shield is self aligned to the location of the flare point of the write pole.

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Bia et al, Detached Pole Tip Design of Perpendicular Write Heads for High Data Rate Recording, IEEE Trans on Magnetics, Sep. 2002, 2240-42, vol. 38, No. 5.
Bia et al, Stiched pole tip design with enhanced head field for perpendicular recording, Journal of Applied Phys, May 13, 2002, 6540-42, vol. 93, No. 10.

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