Patent ID: 8063633
Filing Date: 2011-11-22
Classification: B82Y,G01R,H01L,Y10T

Abstract:
1. A magnetic field sensor structure comprising: a first magnetoresistive element in a spin-valve arrangement with a first reference layer structure with a first reference magnetization direction and with a first ferromagnetic layer structure antiferromagnetically coupled to the first reference layer structure, wherein a first layer thickness ratio DPL, a second magnetoresistive element in a spin-valve arrangement with a second reference layer structure with a second reference magnetization direction and with a second ferromagnetic layer structure antiferromagnetically coupled to the second reference layer structure, wherein a second layer thickness ratio DPL, wherein the first and second magnetoresistive elements are arranged in a layer stack vertically above each other and galvanically isolated from each other by an intermediate layer, and wherein the first and second reference magnetization directions are different.