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Finite element modeling of magnetic field sensors based on nonlinear magnetoelectric effect

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4 Author(s)
Thu Trang Nguyen ; Laboratoire de Génie Electrique de Paris, CNRS UMR8507; SUPELEC; UPMC; University Paris-Sud, 11 Rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex, France ; Bouillault, Frederic ; Daniel, L. ; Mininger, X.

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Magnetoelectric effect in composite materials results from the combination of piezoelectric and magnetostrictive effects. This paper focuses on the development of a harmonic finite element formulation for such coupled problems, taking into account the nonlinearity of magnetostrictive behavior. An application to a magnetic sensor operating under dynamic excitation is presented in order to illustrate the formulation. The enhancement of the magnetoelectric coefficient when a low amplitude harmonic field is superimposed to the static field to be measured is shown to be related to the nonlinearity of magnetic and magnetostrictive behavior.

Published in:

Journal of Applied Physics  (Volume:109 ,  Issue: 8 )