Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass
Patent
1996-01-29
1999-06-29
Luebke, Renee S.
Electrical resistors
Resistance value responsive to a condition
Magnetic field or compass
360113, H01L 4300
Patent
active
059174005
ABSTRACT:
The invention provides a magnetoresistance effects film including (a) at least two thin magnetic films deposited on a substrate, (b) at least one thin nonmagnetic film interposed between the thin magnetic films, and (c) a thin antiferromagnetic film disposed adjacent to one of the thin magnetic films between which the thin nonmagnetic film is interposed. A bias magnetic field of one of the thin magnetic films induced by the thin antiferromagnetic film has an intensity Hr greater than a coercivity H.sub.C2 of the other of the thin magnetic films which is remote from the thin antiferromagnetic film (Hr>H.sub.C2). The thin antiferromagnetic film has a superlattice structure composed of at least two of NiO, Ni.sub.x Co.sub.1-x O (x=0.1-0.9) and CoO. A ratio of Ni relative to Co in the number of atoms in the superlattice structure is set equal to or greater than 1.0. The magnetoresistance effects film exhibits large linear change in resistance with the hysteresis being small even when a small external field is applied thereto.
REFERENCES:
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5304975 (1994-04-01), Saito et al.
patent: 5315282 (1994-05-01), Shinjo et al.
patent: 5341261 (1994-08-01), Dieny et al.
patent: 5436778 (1995-07-01), Lin et al.
patent: 5462795 (1995-10-01), Shinjo et al.
patent: 5508866 (1996-04-01), Gill et al.
patent: 5528440 (1996-06-01), Fontana et al.
patent: 5549978 (1996-08-01), Iwsaski et al.
patent: 5563752 (1996-10-01), Komuro et al.
patent: 5569544 (1996-10-01), Daughton
patent: 5574605 (1996-11-01), Baumgart et al.
patent: 5793279 (1998-08-01), Nepela
B. Dieny et al, "Giant Magnetoresistance in Soft Ferromagnetic Multilayers", Physical Review B, The American Physical Society, 1 Jan. 1991, pp. 1297-1300.
Carey et al. "CoO-NoO superlattices: Interlayer interactions and exchange anisotropy with NiFe", J.App.Phys. 73 (No. 10), pp. 6892-6897, 15 May 1993.
Carey et al. "Exchange anisotropy in coupled films in NiFE with NiO adn CoxNl1-xO" App.Phys.Lett., vol. 60, No. 24, pp. 3060-3062, Jun. 15, 992.
Fujikata Jun-Ichi
Hayashi Kazuhiko
Ishihara Kunihiko
Yamamoto Hidefumi
Easthom Karl
Luebke Renee S.
NEC Corporation
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