Title :
Simple model for the performance of realistic AMR magnetic field sensors
Author :
Spinelli, A.S. ; Minotti, P. ; Laghi, G. ; Langfelder, G. ; Lacaita, A.L. ; Paci, D.
Author_Institution :
DEIB, Politec. di Milano, Milan, Italy
Abstract :
We report on a numerical model for assessing the performance of realistic multi-strip AMR sensors. The model is extensively validated against experimental data and accurately predicts the output characteristics of different devices without any fitting parameters. Moreover, a simpler and computationally faster model employing constant effective demagnetization coefficients is presented, which is able to reproduce the correct device behavior and can be used as a fast device optimization tool.
Keywords :
demagnetisation; enhanced magnetoresistance; magnetic field measurement; magnetic sensors; magnetoresistive devices; anisotropic magnetoresistive sensors; device optimization tool; effective demagnetization coefficients; multistrip AMR sensor; realistic AMR magnetic field sensors; Computational modeling; Demagnetization; Magnetic fields; Magnetic sensors; Numerical models; Strips; AMR; demagnetization; magnetic field sensors; numerical modeling;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2015 Transducers - 2015 18th International Conference on
Conference_Location :
Anchorage, AK
DOI :
10.1109/TRANSDUCERS.2015.7181398
