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The core of novel magnetic field sensors is a microstructured ferromagnetic thin-film element that can convert magnetic signals. This so-called transducer element changes its electrical behavior as soon as a magnetic field is applied from the outside; the atomic "compass needles," the atomic magnetic dipoles, are realigned and thus change the electrical resistance of the transducer element. This behavior is used to determine the magnetic fields.
However, the performance of these sensors is considerably limited by a number of factors. The physical origin and fundamental limits have been analysed in detail by a team led by Dieter Süss in a cooperation between the University of Vienna, the Danube University Krems and Infineon AG in the framework of the Christian Doppler Laboratory "Advanced Magnetic Sensing and Materials." They recently published the results of their investigations and concrete proposals for solutions in the journal Nature Electronics.
Means - Computer - Simulations - Experiments - Scientists
By means of computer simulations that have been validated by experiments, the scientists showed that both interference signals,...
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