Zig-zag shape biased anisotropic magnetoresistive sensor

US7450353B2 · kind B2 · utility

Assignee

• The United States of America, as Represented by the Secretary of Commerce National Institute of Standards and Technology · US

Inventors

• David Pappas · Boulder, US
• Fabio da Silva · Boulder, US
• Jose Aumentado · Boulder, US

Key dates

• Filing date: Oct 6, 2005
• Grant date: Nov 11, 2008
• Expiry date: Jan 5, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/096
• WIPO field: Measurement
• WIPO sector: Instruments

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.