Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1977-01-25
1979-12-18
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Head
Hall effect
360122, 360125, G11B 538, G11B 522
Patent
active
041797191
ABSTRACT:
A magnetic head for reading out the state of magnetization recorded on a magnetic recording medium, in which the magnetic head comprises a substrate of insulating material, an amorphous magnetic thin film, a pair of current terminals, and a pair of voltage terminals. The amorphous magnetic thin film is deposited on the substrate so as to have a width smaller than respective unit areas of magnetic records on a magnetic recording medium to be separately read out therefrom and to have an easy axis of magnetization in a direction perpendicular to the film surface. The current terminals are formed on the substrate for flowing a current in the amorphous magnetic thin film in the lengthwise direction thereof. The voltage terminals are formed on the substrate for deriving from the amorphous magnetic thin film a voltage induced in the transverse direction thereof.
REFERENCES:
patent: 3200207 (1965-08-01), Rainer et al.
patent: 3260980 (1966-07-01), Weiss
patent: 3389230 (1968-06-01), Hudson, Jr.
patent: 3425047 (1969-01-01), Riggs
patent: 3643035 (1972-02-01), Tsukagoshi
patent: 4079430 (1978-03-01), Fusishima et al.
IBM Tech. Disc. Bulletin, Magnetic Films for Hall Effect Devices Useful for Magnetic Recording Heads, R. J. Gambino et al., vol. 18, No. 12, May 1976, pp. 4214-4215.
IBM Tech. Disc. Bulletin, Gd.sub.x Fe.sub.y and GdCoFe Materials for Magnetic Head Hall Sensors, R. J. Gambino et al., vol. 18, No. 12, p. 4218, May 1976.
Imamura Nobutake
Kobayashi Toshihiko
Mimura Yoshinori
Adams Bruce L.
Burns Robert E.
Eddleman Alfred H.
Kokusai Denshin Denwa Kabushiki Kaisha
Lobato Emmanuel J.
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