Magnetic sensing element having chromium layer between...

Details Magnetic sensing element having chromium layer between... Magnetic sensing element having chromium layer between...

2005-04-26

2005-04-26

Heinz, A. J. (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06885528

ABSTRACT:
A magnetic sensing element comprising a composite film having a center portion and two side portions, a second antiferromagnetic layer, a chromium nonmagnetic layer, and third antiferromagnetic layers is provided. The composite film comprises a first antiferromagnetic layer; a pinned magnetic layer on the first antiferromagnetic layer; a nonmagnetic material layer on the pinned magnetic layer; and a free magnetic layer on the nonmagnetic material layer. The second antiferromagnetic layer is disposed on the free magnetic layer. The chromium nonmagnetic layer is disposed on the second antiferromagnetic layer at the center portion. The third antiferromagnetic layers are disposed on the second antiferromagnetic layer at the two side portions. The magnetization direction in the two side portions of the free magnetic layer is pinned in the track width direction and the magnetization direction in the center portion is rotatable in response to external magnetic fields.

REFERENCES:
patent: 20010013999 (2001-08-01), Koi et al.
patent: 20010047930 (2001-12-01), Saito et al.
patent: 20040105192 (2004-06-01), Chien et al.
patent: 2001-297916 (2001-10-01), None
patent: 2001-297917 (2001-10-01), None

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