Orthogonal MR Read head with single hard biased MR stripe

Details Orthogonal MR Read head with single hard biased MR stripe Orthogonal MR Read head with single hard biased MR stripe

1994-07-07

1996-08-13

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

055462545

ABSTRACT:
A high-sensitivity orthogonal magnetoresistive (MR) read head is provided which employs a single MR stripe. The MR stripe extends perpendicular to an air bearing surface (ABS) of the read head and has an easy axis which extends parallel to the ABS. Longitudinal biasing layers are magnetostatically-coupled to the MR stripe for biasing the MR stripe parallel to the ABS. The longitudinal biasing layers and the MR stripe are connected so that their film surfaces lie within a common plane. First and second leads are connected to the MR stripe in a spaced-apart relationship for conducting a sense current through the MR stripe perpendicular to the ABS. The first lead is connected to the MR stripe and the longitudinal biasing layers at the ABS in a substantially planar configuration. A transverse biasing conductor is coupled to the MR stripe for biasing the MR stripe. In the preferred embodiment, the longitudinal biasing layers are constructed of amorphous CoSm. The positioning of the MR stripe and the transverse biasing conductor with respect to first and second shield layers of the MR read head can implement enhanced longitudinal and/or transverse biasing.

REFERENCES:
patent: 3887944 (1975-06-01), Bajorek et al.
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 4972284 (1990-11-01), Smith et al.
patent: 5018037 (1991-05-01), Krounbi et al.
patent: 5218497 (1993-06-01), Tanabe et al.
patent: 5301079 (1994-04-01), Cain et al.
patent: 5327313 (1994-07-01), Nishioka et al.
"Sensitivity of Orthogonal Magnetoresistive Head", CA-05, Intermag 1993, P. Wang & M. Krounbi; IBM Research Division, Almaden Research Center, San Jose, Calif.
"Thin Film MR Head for Density and Rigid Disk Drive", H. Suyama et al., IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2612-2614.
"Exchange Anisotropy in Coupled Filsm of Nl.sub.81 Fe.sub.19 with NiO and Co.sub.x Ni.sub.1-x O", M. J. Carey and A. E. Berkowitz; App. Phys. Lett 60 (24), 15 Jun. 1992, American Institute of Physics, pp. 3060-3062.
"Magnetic Response of Uni-Directional Trilayered Ferromagnetic Antiferromagnetic Coupled Films", T. Imagawa et al., INTERnational MAGnetics Conference, Stockholm, Sweden, Apr. 13-16, 1993.

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