Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1998-03-24
1999-11-16
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Hall effect
257421, 365158, G11B 539
Patent
active
059868589
ABSTRACT:
A ferromagnetic tunnel-junction magnetic sensor includes a first ferromagnetic layer, an insulation barrier layer formed on the first ferromagnetic layer and including therein a tunnel oxide film, and a second ferromagnetic layer formed on the insulation barrier layer, wherein the insulation barrier layer includes a metal layer carrying the tunnel oxide film thereon such that the tunnel oxide film is formed of an oxide of a metal element constituting the metal layer, and wherein the insulation barrier layer has a thickness of about 1.7 nm or less but larger than 1 molecular layer in terms of the oxide forming the tunnel oxide film.
REFERENCES:
patent: 5862022 (1999-01-01), Noguchi
Journal of Applied Physics, vol. 79, Apr. 15, 1996, pp. 4724-4729, J. Moodera & L. Kinder, "Ferromagnetic-insulator-ferromagnetic tunneling: spin-dependent tunneling and large magnetoresistance in trilayer junction" .
Kikuchi Hideyuki
Kobayashi Kazuo
Sato Masashige
Fujitsu Limited
Heinz A. J.
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