Magnetic disc apparatus with head having magneto-resistance effe

Details Magnetic disc apparatus with head having magneto-resistance effe Magnetic disc apparatus with head having magneto-resistance effe

1995-03-07

1998-03-10

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 531

Patent

active

057268380

ABSTRACT:
A magnetic disc apparatus capable of noiseless, high-output reproduction is disclosed. A magnetic head including a magnetic domain control structure having an antiferromagnetic film for applying a longitudinally biasing magnetic field to a magneto-sensitive portion of a magneto-resistance effect film, and a magnetic film smaller in spontaneous magnetization than the magneto-resistance effect film, which magnetic film is interposed between the magneto-resistance effect film and the antiferromagnetic film. A magnetic disc apparatus is thus realized which is high in recording density and usable in stable manner within the operating temperature range.

REFERENCES:
patent: 3840898 (1974-10-01), Bajorek et al.
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 4663685 (1987-05-01), Tsang
patent: 5005096 (1991-04-01), Krounbi et al.
patent: 5014147 (1991-05-01), Parkin et al.

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