Magnetic head with laminated side shields

Details Magnetic head with laminated side shields Magnetic head with laminated side shields

2004-10-29

2009-10-06

Wellington, Andrea L (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S123120, C360S123370, C360S123580

Reexamination Certificate

active

07599151

ABSTRACT:
Embodiments of the invention provide a magnetic recording and read head which reduces the spread read width in a narrow track having a width of 100 nm or less and shows stable read operation. In one embodiment, a side magnetic shield has a multi-layered structure including non-magnetic separate layers and soft magnetic layers, and the soft magnetic layers are magnetized in opposite directions to reduce a magnetic field induced by the side magnetic shield.

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patent: 6778363 (2004-08-01), Meguro et al.
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patent: 2003/0174446 (2003-09-01), Hasegawa
patent: 2003/0189802 (2003-10-01), Morinaga et al.
patent: 2003/0202295 (2003-10-01), Wang et al.
patent: 2003/0227725 (2003-12-01), Macken et al.
patent: 2004/0100737 (2004-05-01), Nakamoto et al.
patent: 03-125311 (1991-05-01), None
patent: 11-259824 (1999-09-01), None

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