Method of providing improvement in the prevention of shield-to-l

Details Method of providing improvement in the prevention of shield-to-l Method of providing improvement in the prevention of shield-to-l

1998-05-29

2000-12-12

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

G11B 539

Patent

active

061606871

ABSTRACT:
A method of providing improvement in the prevention of shield-to-lead shorts in MR/GMR heads is disclosed. A sensor in accordance with the principles of the present invention includes an MR sensor, a lead, the lead being electrically coupled to the MR sensor on opposite sides of the MR sensor and forming a single path to and from the MR sensor, an insulation layer only over the lead, and a gap layer formed over the MR sensor and the insulation layer, wherein the insulation layer has a thickness independent of the thickness of the gap layer. The lead may include a first lead portion electrically coupled to the MR sensor on opposite sides of the MR sensor and forming a single path to and from the MR sensor and a second lead portion, the second lead portion terminating at a distance from the MR sensor. The insulator layer is of a thickness in the range of substantially 100 to 500 angstroms. The first and second lead portions form a composite lead, the composite lead having a first thickness comprising only the first lead portion and a second thickness comprising the first and second lead portions, the first thickness located proximate the MR sensor, the second thickness being thicker than the first thickness and formed at a distance from the MR sensor. The second lead portion includes a geometry selected to optimize the composite lead for resistivity and manufacturability.

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