Technique for reducing pole tip protrusion in a magnetic...

Details Technique for reducing pole tip protrusion in a magnetic... Technique for reducing pole tip protrusion in a magnetic...

2005-05-17

2005-05-17

Cao, Allen (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

06894871

ABSTRACT:
A technique for reducing pole tip protrusion (“PTP”) in a magnetic write head and giant magnetoresistive (“GMR”) stripe temperature in an associated read head structure utilizing one or more internal diffuser regions. In a representative embodiment disclosed, this may be effectuated through the appropriate placement of a relatively highly conductive material diffuser region (e.g. gold (Au) or copper (Cu)) above the poles, between the first pole and the coil and/or through the first pole, second and first shields and undercoat layer to the substrate in order to conduct heat away from the write head poles, insulating layers (e.g. photoresist) and shields.

REFERENCES:
patent: 5025341 (1991-06-01), Bousquet et al.
patent: 5668685 (1997-09-01), Soeya et al.
patent: 6396660 (2002-05-01), Jensen et al.
patent: 6414825 (2002-07-01), Inoue et al.

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