Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-07-05
2005-07-05
Renner, Craig A. (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
06914761
ABSTRACT:
A magnetoresistive sensor includes a substrate and a layer of ferromagnetic material formed over the substrate. A plurality of nonmagnetic regions is formed within the layer of ferromagnetic material. Magnetic flux paths form around each one of the plurality of nonmagnetic regions when the layers of ferromagnetic material is not in a magnetic field. The flux paths are contained completely with the layer of ferromagnetic material and do not penetrate into the plurality of nonmagnetic regions. The sensor also provides for detecting a change in resistance through the layer of ferromagnetic material as a function of a magnetic field applied to the layer of ferromagnetic material.
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Gambino Richard Joseph
Penney, III Thomas
Slonczewski John Casimir
Renner Craig A.
Szecsy Alek P.
Trepp Robert M.
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