Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Patent
1999-11-30
2000-12-05
Ometz, David L.
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
G11B 539
Patent
active
061575267
ABSTRACT:
A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.
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Imagawa Takao
Kamio Hiroshi
Kawabe Takashi
Tadokoro Shigeru
Watanabe Katsuro
Hitachi , Ltd.
Ometz David L.
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