Composite shared pole design for magnetoresistive merged heads

Details Composite shared pole design for magnetoresistive merged heads Composite shared pole design for magnetoresistive merged heads

2006-03-14

2006-03-14

Castro, Angel (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

07012789

ABSTRACT:
A merged read/write magnetic recording head comprises a low magnetic moment first magnetic shield layer over a substrate. A read gap layer with a magnetoresistive head is formed over the first shield layer. A shared pole comprises a low magnetic moment second magnetic shield layer plated on a sputtered seed PLM layer over the read gap layer, a non-magnetic layer plated over the PLM layer and a HMM lower pole layer plated over the second magnetic shield layer. A write gap layer is formed over the first high magnetic moment pole layer of the shared pole. An upper pole comprises a high magnetic moment pole layer over the write gap layer.

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patent: 5949625 (1999-09-01), Sato et al.
patent: 6047462 (2000-04-01), Miyauchi et al.

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