Methods and apparatus for improved read sensors using a...

Details Methods and apparatus for improved read sensors using a... Methods and apparatus for improved read sensors using a...

2008-07-08

2008-07-08

Castro, Angel A (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07397640

ABSTRACT:
A magnetic head with improved hard magnet properties includes a sensor stack structure and a multi-layered seed layer structure formed over crystalline materials of the sensor stack structure. The multi-layered structure has a first layer including chromium-molybdenum (CrMo); a second layer including nitrogenated nickel-tantalum (NiTa+N); and a third layer including chromium-molybdenum (CrMo). A hard bias layer formed over the multi-layered structure is preferably cobalt-platinum-chromium (CoPtCr). Methods of making the magnetic head are also described.

REFERENCES:
patent: 7177121 (2007-02-01), Kojima et al.
patent: 7259941 (2007-08-01), Pinarbasi
patent: 2006/0002041 (2006-01-01), Pinarbasi
patent: 2007/0091515 (2007-04-01), Freitag et al.
patent: 2007/0253123 (2007-11-01), Freitag et al.

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