Commissariat a L'energie Atomique

Claire Baragatti

Robert Cuchet

Line Vieux-Rochaz

A method and an apparatus of a magnetic field sensor structure are disclosed. The magnetic field sensor structure is formed by a bridge of four magnetoresistors (), wherein each magnetoresistor has a longitudinal direction, and each magnetoresistor () is polarised by magnets (). Also, each magnet has a main magnetisation field along an axial magnetisation direction, and a magnetic leakage field. The polarisation magnets () and the magnetoresistors () are arranged in the form of layers on the same substrate. In one embodiment, the polarisation magnets () are at the same level as the magnetoresistors () wherein the polarisation magnets () have the same main magnetisation direction, which is contained in the plane of the layers. The magnetoresistors have their longitudinal direction parallel with that of the axial direction of the magnets. In one embodiment, two magnetoresistors are arranged in the axial field of magnets and two others are in the magnet leakage field.

Growing community of inventors

Grenoble, France

Claire Baragatti