Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2007-03-02
2010-10-05
Blouin, Mark (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07808749
ABSTRACT:
A magnetoresistance effect element which is used in a magnetic sensor is disclosed. The magnetoresistance effect element includes a soft layer whose magnetization easy direction is changed by a direction of an external magnetic field, and a magnetization fixing layer whose magnetization direction is fixed by having a magnetic layer and an anti-ferromagnetic layer. A magnetoresistance effect is generated by a change of electric conduction which is caused by a relative angle between the magnetization easy direction of the soft layer and the magnetization direction of the magnetization fixing layer. When the magnetic sensor includes two or more magnetoresistance effect elements for having two-axis or more vectors of the magnetization directions, the two or more magnetoresistance effect elements are adjacently disposed.
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Blouin Mark
Dickstein & Shapiro LLP
Ricoh & Company, Ltd.
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