Magnetoresistive sensor with antiparallel coupled...

Details Magnetoresistive sensor with antiparallel coupled... Magnetoresistive sensor with antiparallel coupled...

2005-04-05

2005-04-05

Ometz, David L. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06876527

ABSTRACT:
A spin valve sensor with an antiparallel coupled lead/sensor overlap region is provided comprising a ferromagnetic bias layer antiparallel coupled to a free layer in first and second passive regions where first and second lead layers overlap the spin valve sensor layers. The ferromagnetic material of the bias layer in a track width region defined by a space between the first and second lead layers is converted to a nonmagnetic oxide layer allowing the free layer in the track width region to rotate in response to signal fields from a magnetic disk.

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IBM, U.S. Appl. No. 10/118,407, filed Apr. 6, 2002.
IBM, U.S. Appl. No. 09/718,309, filed Nov. 20, 2000.

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