Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-03-21
2006-03-21
Watko, Julie Anne (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07016169
ABSTRACT:
A magnetoresistive head has a magnetoresistive film including first and second magnetization free layers, an intermediate layer sandwiched between the first and second magnetization free layers, an underlayer and a protective layer, a first electrode, a second electrode, a pair of first antiferromagnetic films, and a pair of second antiferromagnetic films. The first electrode is connected with the underlayer and the second electrode is connected with the protective layer, the electrodes allowing a current to flow in a direction substantially perpendicular to the plane of the magnetoresistive film. The pair of first antiferromagnetic films imparts a magnetic bias to the first magnetization free layer in a predetermined direction, and the pair of second antiferromagnetic films imparts a magnetic bias to the second magnetization free layer in a predetermined direction.
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Japanese Office Action Dec. 7, 2004.
Kamiguchi Yuzo
Takagishi Masayuki
Yoshikawa Masatoshi
Yuasa Hiromi
Kabushiki Kaisha Toshiba
Watko Julie Anne
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