Magnetoresistive sensor with nitrogenated hard bias layer...

Details Magnetoresistive sensor with nitrogenated hard bias layer... Magnetoresistive sensor with nitrogenated hard bias layer...

2011-08-23

2011-08-23

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

08004800

ABSTRACT:
A magnetoresistive sensor having a hard bias structure that provides improved bias field robustness. The sensor includes a nitrogenated hard bias layer and a seed layer that include a nitrogenated NiTa layer and a layer of Ru. The seed layer can also include a layer of CrMn disposed between the layer of NiTa and the layer of Ru. The novel seed structure allows a nitrogenated hard bias layer to be used, while maintaining a high magnetic coercivity of the hard bias layer.

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