GMR sensor with shallow contiguous junction and bias layers...

Details GMR sensor with shallow contiguous junction and bias layers... GMR sensor with shallow contiguous junction and bias layers...

2007-10-23

2007-10-23

Watko, Julie Anne (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10788656

ABSTRACT:
A magnetic sensor is disclosed having a shallow contiguous junction. Such a sensor is can greatly increase yield for mass-produced heads, especially for large wafers. The magnetic bias layers can be aligned with a free layer of the sensor, improving performance. Milling may be terminated prior to penetration of an antiferromagnetic layer, so that for example the antiferromagnetic layer may extend significantly beyond the free and pinned layers of the sensor.

REFERENCES:
patent: 6636395 (2003-10-01), Terunuma
patent: 6668443 (2003-12-01), Chien et al.
patent: 6714388 (2004-03-01), Hasegawa et al.
patent: 6731479 (2004-05-01), Ooshima et al.
patent: 6760200 (2004-07-01), Hasegawa
patent: 2003/0011947 (2003-01-01), Saito et al.
patent: 2003/0030947 (2003-02-01), Ooshima

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