Patent ID: 7490522
Filing Date: 2009-02-17
Classification: G01L

Abstract:
1. A sensor, comprising: a substrate; a mechanically deformable area formed in the substrate; and a first magnetostrictive multilayer sensor element and a second magnetostrictive multilayer sensor element, each arranged at least partly in the mechanically deformable area, wherein the first magnetostrictive multilayer sensor element and the second magnetostrictive multilayer sensor element are connected to each other and implemented such that, when generating a mechanical deformation of the mechanically deformable area, (1) the electric resistance of the first magnetostrictive multilayer sensor element changes in opposition to the electric resistance of the second magnetostrictive multilayer sensor element, or (2) the electric resistance of the first magnetostrictive multilayer sensor element remains unchanged and the electric resistance of the second magnetostrictive multilayer sensor element changes, wherein the first and second magnetostrictive multilayer sensor elements are spin-valve sensor elements and a magnetization of the magnetically hard layer of the first sensor element and the second sensor element have the same direction.