Zig-zag shape biased anisotropic magnetoresistive sensor
AssigneeThe United States of America as represented by the Secretary of Commerce, The National Institute of Standards and Technology
InventorsDavid Pappas, Fabio da Silva, Jose Aumentado
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Abstract
A magnetoresistive sensing apparatus is disclosed, comprising a magnetic film having a zig-zag shaped structure, a central axis, and a magnetization associated with the magnetic film, wherein the zig-zag shaped structure biases the magnetization direction alternately at positive and negative angles thereof, thereby permitting the magnetoresistive sensing apparatus to be sensitive to a magnetic field parallel to the axis of the magnetoresistive sensing apparatus and insensitive to magnetic fields perpendicular to the axis.
Claims20
A magnetoresistive sensing apparatus, comprising:
- a magnetic film having a zig-zag shaped structure, a central axis, and a magnetization associated with said magnetic film, wherein said zig-zag shaped structure biases said magnetization direction alternately at positive and negative angles thereof, thereby permitting said magnetoresistive sensing apparatus to be sensitive to a magnetic field parallel to said axis of said magnetoresistive sensing apparatus and insensitive to magnetic fields perpendicular to said axis.
A magnetoresistive sensing apparatus, comprising:
- anisotropic magnetoresistive sensor comprising a thin magnetic film having a zig-zag shaped structure, wherein said thin magnetic film is adapted for use as a data storage element;
- a central axis associated with said zig-zag shaped structure;
- and
- a magnetization associated with said thin magnetic film, wherein said zig-zag shaped structure biases said magnetization direction alternately at positive and negative angles thereof, thereby permitting said magnetoresistive sensing apparatus to be sensitive to a magnetic field parallel to said axis of said magnetoresistive sensing apparatus and insensitive to magnetic fields perpendicular to said axis, and wherein said zig-zag shaped structure creates a positive bias angle of said magnetization direction relative to a current direction of with said thin magnetic film.
A magnetoresistive sensing method, comprising:
- configuring an anisotropic magnetoresistive sensor to comprise a thin magnetic film having a zig-zag shaped structure, such that said thin magnetic film is adaptable for use as a data storage element;
- providing said aid zig-zag shaped structure with a central axis;
- and
- configuring said thin magnetic film with a magnetization, wherein said zig-zag shaped structure biases said magnetization direction alternately at positive and negative angles thereof, thereby permitting said magnetoresistive sensing apparatus to be sensitive to a magnetic field parallel to said axis of said magnetoresistive sensing apparatus and insensitive to magnetic fields perpendicular to said axis, and wherein said zig-zag shaped structure creates a positive bias angle of said magnetization direction relative to a current direction of with said thin magnetic film.
Dependencies are inferred from the claim text.