Process of manufacturing a narrow track CCP head with bias...

Details Process of manufacturing a narrow track CCP head with bias... Process of manufacturing a narrow track CCP head with bias...

2006-11-14

2006-11-14

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603150, C029S603160, C029S603180, C360S320000, C360S324000

Reexamination Certificate

active

07134184

ABSTRACT:
The problem of increased edge sensitivity associated with the reduction of the spacing between bias magnets in a CPP head has been solved by limiting the width of the bias cancellation layer and by adding an extra layer of insulation to ensure that current through the device flows only through its central area, thereby minimizing its edge reading sensitivity.

REFERENCES:
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patent: 6002553 (1999-12-01), Stearns et al.
patent: 6252749 (2001-06-01), Hayakawa
patent: 6529353 (2003-03-01), Shimazawa
patent: 6577124 (2003-06-01), Coehoorn et al.
patent: 6597546 (2003-07-01), Gill
patent: 2002/0024775 (2002-02-01), Hasegawa
Matsuo et al., “Sub-Micron GMR Sensors with Verically Integrated Hard Magnet Biasing Applicable for High Temperature Operation”, IEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2004, pp. 2001-2003.

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