Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Patent
1997-01-16
2000-11-28
Renner, Craig A.
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
36032411, G11B 539
Patent
active
061543497
ABSTRACT:
A magnetoresistive transducer includes a multilayer provided with a first soft magnetic layer, a conductive nonmagnetic layer, a second soft magnetic layer, and a biasing magnetic layer giving a magnetization of a predetermined direction to the second soft magnetic layer, in that order of superposition. The first soft magnetic layer is a multilayer superposed structure including a (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer where Z represents boron and x and y represent atomic fractions (at %), and an alloy layer containing at least Ni and Fe. The (Co.sub.y Fe.sub.100-y).sub.100-x Z.sub.x alloy layer ofthe first soft magnetic layer borders on the nonmagnetic layer and has a face-centered cubic lattice structure with a d spacing smaller than a d spacing of a Co.sub.y Fe.sub.100-y alloy. A pair of electrodes are formed on the multilayer for allowing a sense current to pass through the multilayer.
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Kanai Hitoshi
Kane Junichi
Yamada Ken'ichiro
Fujitsu Limited
Renner Craig A.
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