Magnetoresistance effect head having a giant magnetoresistance e

Details Magnetoresistance effect head having a giant magnetoresistance e Magnetoresistance effect head having a giant magnetoresistance e

1997-12-01

1999-12-07

Davis, David D.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

059993782

ABSTRACT:
A magnetoresistance effect head comprises a giant magnetoresistance effect film, a pair of leads to supply an electric current to the giant magnetoresistance effect head, and upper and lower magnetic shielding layers made of a crystalline soft magnetic film and disposed to hold the giant magnetoresistance effect film therebetween with a magnetic gap film intervened, wherein the surface roughness of an under layer of the giant magnetoresistance effect film is determined so that a center period L of the surface roughness satisfies L>70 nm.

REFERENCES:
patent: 5549978 (1996-08-01), Iwasaki et al.
patent: 5759681 (1998-06-01), Hosoe et al.
patent: 5764567 (1998-06-01), Parkin
patent: 5766743 (1998-06-01), Fujikata et al.
patent: 5780176 (1998-07-01), Iwasaki et al.
patent: 5793279 (1998-08-01), Nepela

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