Team

Magnetism of thin films and nanostructures

Scientific activity

The study of the magnetic properties of thin films, multilayers and nanostructures is at the heart of our team’s research activities. The experimental approach is mainly based on the study of dynamic properties, in particular through the use of Brillouin spectroscopy (BLS) and ferromagnetic resonance (FMR). The main focus is on the study of spin waves associated with linear oscillations around a static situation, giving access to fundamental information (magnetic anisotropies, exchange interaction, interface Dzyaloshinskii-Moriya interaction (iDMI), damping and couplings of various kinds, etc.). Particular attention is paid to the relationship between elaboration, structural properties and physical properties. We are studying various systems that could be excellent candidates for spin-electronics applications: ultra-thin films with perpendicular magnetization, Heusler alloys, and nanometric systems with high aspect ratios and strong anisotropy, such as ferromagnetic nanowire arrays in oxide matrices, or carbon nanotube/ferromagnetic hybrid systems. In recent years, a great deal of activity has been devoted to the study of iDMI, which can lead to the appearance of magnetic skyrmions (potential candidates for magnetic memories), and the effect of electric fields on dynamic magnetic properties.

© Djoudi Ourdani, 2022.

Figure: Stabilization of magnetic skyrmions obtained by simulation in an array of Pt/Co/MgO dots.