Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1997-03-27
2000-07-11
Miller, Brian E.
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B 539
Patent
active
06088195&
ABSTRACT:
A magnetoresistance effect element is provided with a laminated film which is composed of a first ferromagnetic conductive layer, a non-magnetic conductive layer superposed on the first ferromagnetic film, and a second ferromagnetic conductive layer superposed on the non-magnetic conductor layer, and which is provided with a pair of electrodes formed on the laminated film, wherein at least one of the first and second magnetic conductive layers comprises at least a first ferromagnetic layer and a second ferromagnetic film, for example, Co alloy films whose directions of axis of easy magnetization are different from each other. Furthermore, this element is a magnetoresistance effect element provided with a spin valve film having a non-magnetic layer disposed between a first magnetic layer composed of a laminated film of such a ferromagnetic film as a Co based magnetic alloy and a soft magnetic layer, and a second magnetic layer, wherein the soft magnetic layer is composed of a soft magnetic material laminated film of a soft magnetic material film of one kind or soft magnetic material films of two or more kinds, and values of their magnetization M.sub.s (T), film thickness d(nm), and anisotropic magnetic field H.sub.k (Oe) satisfy .SIGMA.(M.sub.s .times.d.times.H.sub.k)>30(Tnm Oe).
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Fuke Hiromi
Fukuzawa Hideaki
Iwasaki Hitoshi
Kamiguchi Yuzo
Sahashi Masashi
Kabushiki Kaisha Toshiba
Miller Brian E.
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