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AssigneeSeagate Technology LLC
InventorsPeter I. Bonyhard, James F. Dolejsi, Charles H. Tolman, William P. Wood
Estimating the term…
An MR sensor having improved current density distribution, reduced overall resistance and a substantially planar surface is disclosed. The MR sensor includes an MR layer having first and second outer regions and an active region located between the first and second outer regions. A first permanent magnet region is formed upon the first MR layer outer region and defines a first boundary of the MR layer active region. A second permanent magnet region is formed upon the second MR layer outer region and defines a second boundary of the MR layer active region so that a gap region is positioned at least partially between the first and second permanent magnet regions. A spacer layer is formed on the MR layer active region between the first and second permanent magnet regions. A soft adjacent layer is formed in the active region and upon the spacer layer, and, in some preferred embodiments, also at least partially upon the permanent magnet region.
A magnetic device comprising:
A magnetoresistive sensor comprising:
A magnetoresistive sensor comprising:
In a magnetoresistive sensor having a magnetoresistive layer, a spacer layer over an active portion of the magnetoresistive layer, a soft adjacent layer over the spacer layer and first and second permanent magnets on outer portions of the magnetoresistive layer, the soft adjacent layer forming a planar surface remote from the spacer layer, characterized in that the first and second permanent magnets form a planar surface remote from the magnetoresistive layer that is substantially coplanar with the planar surface of the soft adjacent layer remote from the spacer layer.
In a magnetoresistive sensor having a magnetoresistive layer, a spacer layer over an active portion of the magnetoresistive layer, a soft adjacent layer over the spacer layer, first and second permanent magnets on outer portions of the magnetoresistive layer abutting the spacer layer and abutting the soft adjacent layer, and first and second contacts on the respective first and second permanent magnets, characterized in that the first and second contacts are remote from the active portion of the magnetoresistive layer.
Dependencies are inferred from the claim text.