Magnetic sensing element including a pair of...

Details Magnetic sensing element including a pair of... Magnetic sensing element including a pair of...

2007-05-01

2007-05-01

Klimowicz, William (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10755698

ABSTRACT:
Disclosed are a magnetic sensing element in which side reading can be prevented, read sensitivity can be improved, and gap narrowing is enabled, and a method for fabricating the same. A magnetic sensing element includes a pair of first antiferromagnetic layers separated by a first spacer section. A first spacer layer is disposed in the first spacer section. The first spacer layer has the same composition as that of the first antiferromagnetic layers, and has a disordered crystal structure with a thickness that is smaller than that of the first antiferromagnetic layers. A first free magnetic layer is disposed on the continuous surface including the upper surfaces of the first antiferromagnetic layers and the first spacer layers. The magnetic sensing element also includes a nonmagnetic interlayer, a second free magnetic layer, and a pair of second antiferromagnetic layers separated by a second spacer section on the second free magnetic layer.

REFERENCES:
patent: 6023395 (2000-02-01), Dill et al.
patent: 6134090 (2000-10-01), Mao et al.
patent: 6396668 (2002-05-01), Mao et al.
patent: 6411478 (2002-06-01), Mao et al.

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