Thin layer magnetic field sensitive sensor apparatus with magnet layer system

摘要

The apparatus has an increased magnetoresistive effect with a spin dependent electron control of majority and minority electrons. The system has a weakly magnetic measurement layer and a bias layer system which is relatively more magnetic. A decoupling layer is provided between the at least one measurement layer and the at least one bias layer system. The bias layer system (16) has at least one reflector layer part which is dependent on spin with respect to the electrons. The reflector layer part has at least one boundary surface which reflects the electrons in dependence on their spin. The reflector layer part also has regions in which their is an at least continuous diffuse scattering on non-reflected electrons. The reflector layer part has a spin dependent reflecting reflector layer (22) within the at least one bias layer system (16).