title: Magneto-optical micromechanical systems for magnetic field mapping.
abstract: 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.
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Truong
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Ortiz
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Mélissa
authors.initials: M
authors.lastname: Morcrette
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Dietsch
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Philippe
authors.initials: P
authors.lastname: Sabon
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Joumard
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Alain
authors.initials: A
authors.lastname: Marty
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.|CEA, LETI, Minatec Campus, F-38000, Grenoble, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Joisten
authors.affiliation: Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.|CEA, INAC-SX, F-38000, Grenoble, France.|CNRS, SX, F-38000, Grenoble, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Dieny