Passer au contenu


Submillimetric Fe-based supercristal prepared by magnetophoresis : from chemical synthesis to multiscale magnetic characterization

Research project selected under the 2021 call for proposals

Principal Investigator : Lise-Marie LACROIX

Involved Teams :

  • CEMES / I3EM
  • LGC – Fédération Fermat

Type of project : Collaborative Project

Date (start/end) : 2021 – 2025

Schematic view of the SuperFer project

The fabrication and integration of magnetic materials combining performance and sub-millimeter size are of major importance for portable devices, among which RF systems. Mesocrystals prepared from the assembly of nanoparticles opens great perspective to design electrical insulators exhibiting high magnetization and high permeability. Thanks to the magnetophoresis-driven assembly we recently developed, integrated 3D mesocrystals with controlled sizes and shapes can be obtained. Here, FeCoNi-based mesocrystals will be studied, from the organometallic synthesis of the building blocks, to the mechanism behind the directed assembly driven by magnetic field gradients. Advanced multi-scale magnetic characterizations combined with simulations will allow unravelling the effect of the intrinsic NP properties (chemical composition, structure, magnetic configuration) and of the magnetic interactions on the final mesocrystal’s properties.