Perpendicular magnetic recording write head with trailing...

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

2011-08-09

2011-08-09

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125300

Reexamination Certificate

active

07995307

ABSTRACT:
A perpendicular magnetic recording write head has a magnetic write pole (WP) and a trailing shield (TS). The TS has a height (TS-HT) and a throat height (TS-TH) in a direction perpendicular to the ABS, with TS-TH being less than TS-HT. Nonmagnetic material is located between the TS and the WP and separates the TS from the WP. The nonmagnetic material includes a gap layer and a nonmagnetic electroplated “bump” or pad between the WP and the TS. The pad has a front edge generally parallel to and recessed from the ABS so that the TS-TH is generally equal to the distance from the ABS to the pad's front edge. An electrical lapping guide (ELG) is formed adjacent to the write head, with the back edge of the ELG being defined in the same process step that defines the location of the recessed front edge of the electroplated pad.

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