Patent ID: 6465053
Filing Date: 2002-10-15
Classification: B82Y,G01R,H01L

Abstract:
A method of manufacturing a magnetic field sensor or magnetic memory having at least two magnetoresistive bridge elements (A,B,C,D), each magnetoresistive element comprising a free (F) and a pinned (P) ferromagnetic layer, said at least two bridge elements having pinned ferromagnetic layers with different magnetization directions, comprising depositing, in a first deposition step, a first ferromagnetic layer of one of the at least two said elements, applying a magnetic field during said first deposition step to pin the magnetization direction MP in the first ferromagnetic layer in a first direction, then, in a second deposition step, depositing a second ferromagnetic layer of the other of the two said elements, and applying a magnetic field during said second deposition step to pin the magnetization direction in the second ferromagnetic layer in a second direction different from the magnetization direction in the first ferromagnetic layer.