Graded laminated thin film poles and shields for magnetic heads

Details Graded laminated thin film poles and shields for magnetic heads Graded laminated thin film poles and shields for magnetic heads

2005-08-16

2005-08-16

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06930863

ABSTRACT:
A magnetic head having a magnetic shield and/or pole layer that is fabricated as a plurality of laminated layers, in which each layer includes a sublayer thickness of Fe(N) and a sublayer thickness of NiFe(N), and where the relative thickness of these two sublayers is graduated. Particularly, the initially deposited laminations include sublayers of NiFe(N) having a thickness that is substantially greater than the thickness of the Fe(N) sublayers, whereas the finally deposited laminations include sublayers having an Fe(N) thickness that is substantially greater than the thickness of the NiFe(N) sublayers.

REFERENCES:
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patent: 5652015 (1997-07-01), Aboaf et al.
patent: 5838521 (1998-11-01), Ravipati
patent: 6038106 (2000-03-01), Aboaf et al.
patent: 6496335 (2002-12-01), Gill
patent: 6760198 (2004-07-01), Jarratt
patent: 62156264 (1987-07-01), None

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