Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1994-08-15
1997-01-28
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Head
Hall effect
338 32R, G11B 5127, G11B 533
Patent
active
055983081
ABSTRACT:
A magnetoresistive (MR) sensor comprising a layered structure having at least one trilayer comprising a first and a second thin film ferromagnetic layers separated by and in interfacial contact with a third thin film non-metallic magnetic layer. A fourth thin film layer of material is within the first ferromagnetic layer, and the fourth layer has a thickness between a fraction of a monolayer and several monolayers and is located at predetermined distance from the interface between the first and third layers. A current flow is produced through the MR sensor and variations in resistivity of the MR sensor produced by rotation of the magnetization in one or both of the ferromagnetic layers is sensed as a function of the magnetic field being sensed.
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Dieny Bernard
Gurney Bruce A.
Parkin Stuart S. P.
Sanders Ian L.
Speriosu Virgil S.
International Business Machines - Corporation
Klimowicz William J.
Levy Stuart S.
Murray Leslie G.
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