MAGNETIC SENSOR BASED ON BALLISTIC MAGNETORESISTANCE USING A PINHOLE MULTILAYER SYSTEM

摘要

The invention relates to method of producing magnetic sensors based on ballistic magnetoresistance using pinhole multilayer systems. The multilayers used can take the form of a combination of layers of materials having different conductive and magnetic properties. The pinholes employed for constriction purposes can be integrated into the multilayer system or incorporated later using different methods. The invention is characterised in that nanometric-sized electric contacts are produced between nanometric-sized systems: thin magnetic layers and clusters. According to the invention, BMRS sensors are provided with the necessary stability and stiffness for use in devices. Moreover, said invention can be used to produce sensors having a resistance and sensitivity desired in accordance with the application thereof.