Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-01-25
2005-01-25
Klimowicz, William (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
06847508
ABSTRACT:
The present invention provides a spin valve thin film magnetic element including a laminate in which an antiferromagnetic layer, a pinned magnetic layer provided in contact with the antiferromagnetic layer so that the magnetization direction is pinned by an exchange coupling magnetic field with the antiferromagnetic layer, a nonmagnetic conductive layer provided in contact with the pinned magnetic layer, a second free magnetic layer provided in contact with the nonmagnetic conductive layer, a nonmagnetic intermediate layer provided in contact with the second free magnetic layer, a first free magnetic layer provided in contact with the nonmagnetic intermediate layer and antiferromagnetically coupled with the second free magnetic layer to form a ferrimagnetic state together with the second free magnetic layer, and a backed layer provided in contact with the first free magnetic layer and having higher conductivity than the first free magnetic layer are laminated. The present invention also provides a magnetic head using the spin valve thin film magnetic element.
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Hasegawa Naoya
Honda Kenji
Ide Yosuke
Kakihara Yoshihiko
Saito Masamichi
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Klimowicz William
Watko Julie Anne
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