Magnetic sensor having free layer additionally provided with...

Stock material or miscellaneous articles – Magnetic recording component or stock – Magnetic head

Reexamination Certificate

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C428S812000, C428S813000, C428S816000, C360S324110

Reexamination Certificate

active

07029771

ABSTRACT:
An intermediate region is formed at a central portion of an element in a track width direction, and an antiferromagnetic layer is not provided at the intermediate region. Accordingly, a sense current can be prevented from being shunted to the intermediate region, and as a result, improvement in reproduction output and strength against magnetic electrostatic damage can be realized. In addition, since the thickness of the central portion of the element is decreased, trend toward narrower gap can be realized. Furthermore, since the direction of magnetization of a free magnetic layer is oriented in the track width direction by shape anisotropy, means for orienting the magnetization is not necessary, and hence the structure and manufacturing method of the element can be simplified.

REFERENCES:
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patent: 6364964 (2002-04-01), Sasaki et al.
patent: 2001/0014000 (2001-08-01), Tanaka et al.
patent: 2002/0048690 (2002-04-01), Fukuzawa et al.
patent: 2003/0179516 (2003-09-01), Freitag et al.
patent: 2004/0004792 (2004-01-01), Hasegawa et al.
patent: 2004/0207962 (2004-10-01), Saito et al.
patent: 2005/0018363 (2005-01-01), Hasegawa et al.
patent: 08-007225 (1996-01-01), None
patent: 2000-163717 (2000-06-01), None
patent: 2001-256617 (2001-09-01), None
Pending claims of co-assigned application 10/675,435.

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