Magnetoresistive head

Details Magnetoresistive head Magnetoresistive head

1996-07-03

1997-11-25

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

056918640

ABSTRACT:
As an antiferromagnetic layer achieving exchange anisotropic coupling with a ferromagnetic layer, any Mn alloy of Ru-Mn, Rh-Mn, Ir-Mn, Pd-Mn, and Pt-Mn alloys is used. The content of each element is 10 to 45 atomic % for Ru, 10 to 40 atomic % for Rh, 10 to 40 atomic % for Ir, 10 to 25 atomic % for Pd, and 10 to 25 atomic % for Pt, respectively. Since the alloy exhibits excellent corrosion resistance and exchange anisotropic magnetic field in spite of its irregular crystal structure, no high temperature treatment is required in order to achieve a change in the crystal structure. The alloy is durable to high temperature due to a decreased change in the exchange anisotropic magnetic field.

REFERENCES:
patent: 4663685 (1987-05-01), Tsang
patent: 4755897 (1988-07-01), Howard
patent: 5315468 (1994-05-01), Lin et al.
patent: 5408377 (1995-04-01), Gurney

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