Electro-precipitation of Fe3O4 nanoparticles in ethanol

Rodrigo F.C. Marques (1) , Cécile Marcelot (2) , Pierre Lecante (2) , Sidney J.L. Ribeiro (1) , Laure Noé (2) , Nuno J.O. Silva (3) , Vitor Amaral (3) , Angel Millán (4) , Marc Verelst (2)

1 UNESP - Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University
2 CEMES - Centre d'élaboration de matériaux et d'études structurales
3 Universidade de Aveiro
4 University of Zaragoza - Universidad de Zaragoza [Zaragoza]

The preparation of superparamagnetic magnetite (Fe3O4) nanoparticles by electro-precipitation in ethanol is proposed. Particle average size can be set from 4.4 to 9 nm with a standard deviation around 20%. Combination of wide-angle X-ray scattering (WAXS), Electron energy loss spectroscopy (EELS) and Mössbauer spectroscopy characterizations clearly identifies the particles as magnetite single-crystals (Fe3O4).

Mots clés: Iron ores; Magnetism; Magnetite; Oxide minerals; Paramagnetism; Superparamagnetism; Precipitation (metallography); Superparamagnetic; Iron

Domaines: Physique [physics]

Rodrigo F.C. Marques, Cécile Marcelot, Pierre Lecante, Sidney J.L. Ribeiro, Laure Noé, et al.. Electro-precipitation of Fe3O4 nanoparticles in ethanol. Journal of Magnetism and Magnetic Materials, 2008, 320 (19), pp.2311-2315. ⟨10.1016/j.jmmm.2008.04.165⟩. ⟨hal-01760318⟩