Dual-type magnetic detecting element in which free magnetic...

Details Dual-type magnetic detecting element in which free magnetic... Dual-type magnetic detecting element in which free magnetic...

2007-01-02

2007-01-02

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10642899

ABSTRACT:
A first free magnetic layer, a second free magnetic layer, a lower pinned magnetic layer, and an upper pinned magnetic layer are formed of magnetic materials whose β values are suitably set so that the resistances for up-spin conduction electrons of all the magnetic layers become lower than those for down-spin conduction electrons when the magnetization of a free magnetic layer is changed to exhibit a lowest resistance. The magnetic detecting element exhibits an increased change in resistance per area.

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