Self-assembly and self-orientation of truncated nano-octahedra of magnetite

Details Self-assembly and self-orientation of truncated nano-octahedra of magnetite Self-assembly and self-orientation of truncated nano-octahedra of magnetite

2005-12-19

arxiv.org/abs/cond-mat/0512433v1

Advanced Materials 18, 2418-2421 (2006)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1002/adma.200600788

Monodispersed magnetite (Fe3O4) nanoparticles were synthesized. Transmission electron microscopy study shows that the nanoparticles are in the shape of Wagner-Seitz crystals. The magnetite nanoparticles self-assemble into body-centered cubic superlattice, in which the nanoparticles have the same crystallographic orientations. Shape plays a very critical role in controlling the orientation of the nanoparticles in the superlattice. Both the self-assembly and self-orientation of nanoparticles are important for technical applications. This can also act as a complement to conventional lithography techniques.

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