SuperFer
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 :
- LPCNO / NCO
- LPCNO/ NM
- CEMES / I3EM
- LGC – Fédération Fermat
Type of project : Collaborative Project
Date (start/end) : 2021 – 2025
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.