Magnetic sensor having antiferromagnetic layers and free...

Details Magnetic sensor having antiferromagnetic layers and free... Magnetic sensor having antiferromagnetic layers and free...

2007-12-25

2007-12-25

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S324100, C360S324120

Reexamination Certificate

active

10946323

ABSTRACT:
At two sides of a multilayer film including a free magnetic layer, a first non-magnetic material layer, and a fixed magnetic layer, extension portions extending from the fixed magnetic layer are formed. At lower sides of the extension portions, a pair of first antiferromagnetic layers is formed with a space therebetween in a track width direction, and in addition, at upper sides of the extension portions, a pair of second antiferromagnetic layers is formed with a space therebetween in the track width direction.

REFERENCES:
patent: 7027268 (2006-04-01), Zhu et al.
patent: 2001/0028541 (2001-10-01), Gill
patent: 2004/0004792 (2004-01-01), Hasegawa et al.
patent: 2004/0067389 (2004-04-01), Hasegawa et al.
patent: 2004/0095690 (2004-05-01), Beach
patent: 2005/0264956 (2005-12-01), Lee et al.
patent: 2005/0276997 (2005-12-01), Hasegawa et al.
patent: 2002-289945 (2002-10-01), None

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