Stabilized MR sensor and flux guide joined by contiguous junctio

Details Stabilized MR sensor and flux guide joined by contiguous junctio Stabilized MR sensor and flux guide joined by contiguous junctio

1996-06-17

1999-07-27

Korzuch, William R.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

059300841

ABSTRACT:
The back end of an MR sensor and a flux guide are joined by a contiguous self-aligned junction so that a predictable overlap of the flux guide on the back end of the MR sensor can be achieved for optimizing signal flux density in the MR sensor. Lead/longitudinal bias layers for the MR sensor are also joined by a contiguous self-aligned junction to the flux guide for stabilizing the flux guide. By employing a single lift off resist mask the MR sensor and the lead/longitudinal bias layers can be patterned followed by deposition of the flux guide. The flux guide is a bilayer of an insulation material layer and a flux guide material layer. The insulation material layer is sandwiched between the MR sensor and the flux guide material layer and between the lead/longitudinal bias layers and the flux guide material layer. A heat guide or combined flux guide and heat guide may be substituted for the aforementioned flux guide.

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