Controlled synthesis of core-shell Fe@Au faceted nanoparticles

Patrizio Benzo (1) , Magali Benoit (1) , Nathalie Tarrat (1) , Cyril Langlois (2) , R. Arenal (3) , Béatrice Pécassou (4) , Arnaud Le Priol (4) , Nicolas Combe (1) , Anne Ponchet (1) , Marie-José Casanove (1)

1 CEMES-SINanO - Surfaces, Interfaces et Nano-Objets
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]
3 Laboratorio de Microscopías Avanzadas
4 CEMES - Centre d'élaboration de matériaux et d'études structurales

Core-shell Fe@Au crystalline NPs, particularly suitable for biomedical applications, have been successfully synthesized by sequential deposition from two elemental targets in a ultrahigh vacuum sputtering device. The size of the NPs, in the 8-15 nm range, is controlled by the deposited Fe volume. The obtained NPs adopt an original polyhedral core-shell morphology in which a Fe nanocube core acts as a nanosubstrate for the epitaxial growth of gold islands with a truncated pyramid shape. The morphological, structural and chemical properties of the NCs are studied through advanced TEM based techniques (HREM, STEM-HAADF, EDX) down to the atomic scale.

Domaines: Chimie-Physique [physics.chem-ph]

Patrizio Benzo, Magali Benoit, Nathalie Tarrat, Cyril Langlois, R. Arenal, et al.. Controlled synthesis of core-shell Fe@Au faceted nanoparticles. 2016 IEEE Nanotechnology Materials and Devices Conference (NMDC), Oct 2016, Toulouse, France. ⟨10.1109/NMDC.2016.7777160⟩. ⟨hal-01755488⟩