Magnetic resistance device

Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head

Reexamination Certificate

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Reexamination Certificate

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06992869

ABSTRACT:
In order to realize a magnetic resistance device having a high magnetic resistance change rate, satisfactory production yield and a low level of variation in production, a pair of magnetic tunnel resistance devices2employing a laminated structure comprised of antiferromagnetic film8, lower magnetic layer9, barrier film10and upper magnetic layer11are independently and separately formed by ion beam etching on a lower electrode3and in common with said lower electrode3provided on a substrate5. A pair of independent upper electrodes4are formed on upper magnetic layer11. As a result, a pair of magnetic tunnel resistance devices2are formed connected in series on substrate5.

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patent: 6469879 (2002-10-01), Redon et al.
patent: 6482657 (2002-11-01), Shimazawa
patent: 6563682 (2003-05-01), Sugawara et al.
patent: 6567244 (2003-05-01), Gill
patent: 6583967 (2003-06-01), Kasahara et al.
patent: 6639766 (2003-10-01), Nobuyuki et al.
patent: 6710986 (2004-03-01), Sato et al.
patent: 11-97762 (1999-04-01), None
patent: 11-112054 (1999-04-01), None
patent: 11-135857 (1999-05-01), None

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