Insulative in-stack hard bias for GMR sensor stabilization

Details Insulative in-stack hard bias for GMR sensor stabilization Insulative in-stack hard bias for GMR sensor stabilization

2006-01-10

2006-01-10

Chen, Tianjie (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

06985338

ABSTRACT:
A GMR sensor is disclosed for sensing magnetically recorded information on a data storage medium. The sensor includes a ferromagnetic free layer and a ferromagnetic pinned layer sandwiching an electrically conductive spacer layer. An in-stack, electrically insulative hard biasing layer is adapted to bias the free layer to a neutral magnetic domain orientation when the sensor is in a quiescent state with no external magnetic fields.

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“Contiguous Hard Bias Optimization for Magnet Resistive Head”, IBM Technical Disclosure Bulletin, pp. 93-94, (10/26).
“Canted Contiguous Hard Bias Stabilization for Very Thin Magnetoresistive/Giant Magneto-Resistance Sensor”, IBM Technical Disclosure Bulletin, pp. 103-104, Jun. 1996.

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