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Journal Articles Scientific Reports Year : 2016

Magneto-optical micromechanical systems for magnetic field mapping


A new method for magnetic field mapping based on the optical response of organized dense arrays of flexible magnetic cantilevers is explored. When subjected to the stray field of a magnetized material, the mobile parts of the cantilevers deviate from their initial positions, which locally changes the light reflectivity on the magneto-optical surface, thus allowing to visualize the field lines. While the final goal is to be able to map and quantify non-uniform fields, calibrating and testing the device can be done with uniform fields. Under a uniform field, the device can be assimilated to a magnetic-field-sensitive diffraction grating, and therefore, can be analyzed by coherent light diffraction. A theoretical model for the diffraction patterns, which accounts for both magnetic and mechanical interactions within each cantilever, is proposed and confronted to the experimental data.
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Dates and versions

hal-01585345 , version 1 (02-06-2021)


Attribution - CC BY 4.0



Alain Truong, Guillermo Ortiz, Mélissa Morcrette, Thomas Dietsch, Philippe Sabon, et al.. Magneto-optical micromechanical systems for magnetic field mapping. Scientific Reports, 2016, Scientific Reports, 6, pp.31634. ⟨10.1038/srep31634⟩. ⟨hal-01585345⟩
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