Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-07-10
2007-07-10
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603130, C427S097200, C427S097800, C427S132000, C427S270000, C205S119000, C205S161000, C205S205000, 91, 91, 91
Reexamination Certificate
active
10796086
ABSTRACT:
A method of manufacturing a magnetoresistance effect element includes forming an insulating layer on a first ferromagnetic layer, forming an aperture reaching the first ferromagnetic layer by thrusting a needle from the top surface of the insulating layer, and depositing a ferromagnetic material to form a second ferromagnetic layer overlying the insulating layer which buries the aperture. The aperture can have an opening width not larger than 20 nm. A current flowing between the first ferromagnetic layer and the needle can be monitored, and thrusting of the needle can be interrupted when the current reaches a predetermined value.
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Haneda Shigeru
Kamiguchi Yuzo
Kishi Tatsuya
Ohsawa Yuichi
Okuno Shiho
Kabushiki Kaisha Toshiba
Tugbang A. Dexter
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