Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2007-01-16
2010-11-23
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07839608
ABSTRACT:
A tunnel-type magnetic detecting device is provided. The tunnel-type magnetic detecting device is capable of stably reducing the surface roughness of an insulating barrier layer, and capable of properly improving an MR effect typified by a resistance changing rate. A seed layer is formed in a laminated structure of an NiFeCr layer and an Al layer. This makes it possible to stably reduce the surface roughness of the insulating barrier layer as compared with a related art in which a seed layer is formed in a single-layer structure of an NiFeCr layer. Accordingly, according to the tunnel-type magnetic detecting device of the invention, the MR property typified by an excellent resistance changing rate (ΔR/R) can be obtained stably.
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Hasegawa Naoya
Ikarashi Kazuaki
Kamai Kazumi
Umetsu Eiji
Brinks Hofer Gilson & Lione
Miller Brian E
TDK Corporation
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