Method of manufacture for an improved magnetoresistive read transducer
AssigneeInternational Business Machines Corporation
InventorsMao-Min Chen, Ching H. Tsang
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Abstract
A magnetoresistive (MR) read transducer in which a layered structure comprising an MR layer, an antiferromagnetic material in direct contact with the MR layer and a thin layer of interdiffusion material in contact with the layer of antiferromagnetic material is subjected to a heating process to a temperature within a chosen temperature for a chosen time to form a magnetic interface between the antiferromagnetic material the MR layer. The magnetic interface produces a high level of exchange bias with the MR layer.
Claims9
A method for making a magnetoresistive read transducer assembly comprising the steps of:
- providing a substrate;
- depositing a thin magnetoresistive layer of ferromagnetic material on said substrate;
- depositing a thin layer of antiferromagnetic material in direct contact with the magnetoresistive layer;
- depositing a thin layer of an interdiffusion material in contact with the layer of antiferromagnetic material;
- and
- heating said layered structure to form a magnetic interface between said antiferromagnetic material and said magnetoresistive layer whereby said magnetic interface produces an exchange bias field in said magnetoresistive layer.
Dependencies are inferred from the claim text.