Magnetoresistive sensor having a high coercivity hard bias...

Details Magnetoresistive sensor having a high coercivity hard bias... Magnetoresistive sensor having a high coercivity hard bias...

2007-08-21

2007-08-21

Watko, Julie Anne (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10975175

ABSTRACT:
A magnetoresistive sensor having a hard bias structure having increased coercivity and squareness. The structure also allows the use of a thinner seed layer, which results in improved biasing by decreasing the spacing between the hard magnetic bias layer and the free layer of the sensor. The hard bias structure can be deposited over either a crystalline structure or over an amorphous material. The hard bias structure includes a hard bias material comprising CoPt deposited over a seed layer including a layer of NiTa and a layer of CrMo.

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