Magnetic head having encapsulated magnetoresistive transducer an

Details Magnetic head having encapsulated magnetoresistive transducer an Magnetic head having encapsulated magnetoresistive transducer an

1996-06-20

1998-04-21

Levy, Stuart G.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

057424594

ABSTRACT:
A magnetic head assembly includes a read head having an active central region and two inactive side regions contiguously formed relative to the central region. The central region includes a magnetoresistive (MR) transducer for enabling active sensing of data recorded on a magnetic medium. Protective layers encapsulate the central region and separate it from the side regions, such that diffusion and electromigration are reduced. Each end region includes a longitudinal bias layer, and a multilayered conductive section. The longitudinal bias layer may be formed of alternating layers of antiferromagnetic material and layers of soft magnetic material and/or hard magnetic longitudinal bias. The multilayered conductive section includes conductive leads that do not contact either the MR element or the soft bias layer. The conductive layers are interlayered between a plurality of spacers that provide structural support to the conductive section, and that increase the overall mechanical hardness of the conductive section. Some or all of the protective layers as well as the spacers of the conductive sections may be made from selected refractory materials.

REFERENCES:
patent: 5018037 (1991-05-01), Krounbi et al.
patent: 5434826 (1995-07-01), Ravipati et al.
patent: 5491600 (1996-02-01), Chen et al.
patent: 5532892 (1996-07-01), Nix et al.

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