Perpendicular magnetic recording write head with notched...

Details Perpendicular magnetic recording write head with notched... Perpendicular magnetic recording write head with notched...

2011-05-31

2011-05-31

Miller, Brian E (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Gap spacer

C360S125030

Reexamination Certificate

active

07952831

ABSTRACT:
A perpendicular magnetic recording write head has a write pole, a trapezoidal-shaped trailing shield notch, and a gap between the write pole and notch, with the gap being formed of a nonmagnetic mask film, such as alumina, a nonmagnetic metal protective film and a nonmagnetic gap layer. The write pole has a trailing edge that has a width substantially defining the track width and that faces the front edge of the notch but is spaced from it by the gap. The write pole has nonmagnetic filler material, such as alumina, surrounding it except at its trailing edge, where it is in contact with the gap. A reactive ion beam etching (RIBE) process removes the filler material at the side edges of the write pole and thus widens the opening at the side edges. The nonmagnetic metal film protects the underlying mask film and write pole during the widening of the opening. The gap layer and trailing shield notch are deposited into a widened opening above the write pole, so the sides of the notch diverge to cause the generally trapezoidal shape.

REFERENCES:
patent: 5567333 (1996-10-01), Hira et al.
patent: 6954340 (2005-10-01), Shukh et al.
patent: 7248431 (2007-07-01), Liu et al.
patent: 7441325 (2008-10-01), Gao et al.
patent: 7477481 (2009-01-01), Guthrie et al.
patent: 7509729 (2009-03-01), Allen et al.
patent: 7558019 (2009-07-01), Le et al.
patent: 7788797 (2010-09-01), Kim et al.
patent: 2003/0231426 (2003-12-01), Sato
patent: 2004/0212923 (2004-10-01), Taguchi
patent: 2004/0218312 (2004-11-01), Matono
patent: 2005/0068665 (2005-03-01), Le et al.
patent: 2005/0243464 (2005-11-01), Lille
patent: 2005/0259355 (2005-11-01), Gao et al.
patent: 2005/0264931 (2005-12-01), McFadyen
patent: 2006/0174474 (2006-08-01), Le
patent: 2007/0245545 (2007-10-01), Pentek et al.
A.I. Stognij e tal. ,“Reactive Ion-Beam Etching of Thick Polyimide Layers in an Oxygen+Argon Mixture”,Russian Microelectronics, vol. 30, No. 5, 2001, pp. 330-334.

Affiliated with

Also associated with

Rating

Perpendicular magnetic recording write head with notched... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perpendicular magnetic recording write head with notched..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpendicular magnetic recording write head with notched... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2655252