Impregnation of High-Magnetization FeCo Nanoparticles in Mesoporous Silicon: An Experimental Approach

Mathieu Lepesant (1, 2) , Benjamin Bardet (3, 4) , Lise-Marie Lacroix (2) , Pierre Fau (1) , Cyril Garnero (2, 1) , Bruno Chaudret (2) , Aikaterini Soulantika (2) , Thomas Defforge (3) , Damien Valente (3) , Caroline Andreazza (5) , Jérôme Billoue (3) , Patrick Poveda (4) , Gaël Gautier (3)

1 LCC - Laboratoire de chimie de coordination
2 LPCNO - Laboratoire de physique et chimie des nano-objets
3 GREMAN - UMR 7347 - GREMAN (matériaux, microélectronique, acoustique et nanotechnologies)
4 ST-TOURS - STMicroelectronics [Tours]
5 ICMN - Interfaces, Confinement, Matériaux et Nanostructures

This paper deals with the synthesis of high-magnetization porous silicon-based nanocomposites. Using well-controlled organometallic synthesis of ferromagnetic FeCo nanoparticles, the impregnation of mesoporous silicon has been performed by immersion of porous silicon in a colloidal solution. The technique was optimized by controlling the temperature, the immersion duration, and the solvent nature. The characterization of the nanocomposites showed a homogeneous filling of the pores and a high magnetization of 135 emu/cm3. Such composites present a great interest for many applications including data storage, medical instrumentations, catalysis, or electronics.

Mots clés: impregnation; magnetic nanoparticles; mesoporous silicon; nanocomposite; magnetic properties

Domaines: Matériaux; Chimie inorganique

Mathieu Lepesant, Benjamin Bardet, Lise-Marie Lacroix, Pierre Fau, Cyril Garnero, et al.. Impregnation of High-Magnetization FeCo Nanoparticles in Mesoporous Silicon: An Experimental Approach. Frontiers in Chemistry, 2018, 6, pp.609. ⟨10.3389/fchem.2018.00609⟩. ⟨hal-02001841⟩