| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Processing Materials for Properties
|
| Presentation Title |
In situ Neutron Diffraction Study of Solvent-free Fabrication of Ferromagnetic Core-Shell Fe3O4-Carbon Nanocomposite |
| Author(s) |
Sven C. Vogel, Vilas Pol, Luke Daemen, George Chertkov |
| On-Site Speaker (Planned) |
Sven C. Vogel |
| Abstract Scope |
The synthesis of nanomaterials is the subject of intense current research since the nanoparticles of interest to applications are only prepared in the laboratory and are difficult to produce in a monodisperse form. Most of the current processes are complex and synthesize nanomaterials to varying degrees of commercially-viable quantities. Pol et al. developed a completely new facile synthesis approach called RAPET [<I>R</I>eaction under <I>A</I>utogenic <I>P</I>ressure at <I>E</I>levated <I>T</I>emperature] for the nano-synthesis of metals, oxides, carbides, phosphides, sulfides etc. However, it has always remained a challenge to understand the exact dissociation stage of the chemical precursor under autogenic pressure at elevated temperature and the exact arena of segregation or formation of nanostructures. Using neutron diffraction, we could study the thermolysis of a single deuterated precursor, Fe<SUB>3</SUB>(CH<SUB>3</SUB>COO)<SUB>6</SUB>(OH)<SUB>2</SUB>CH<SUB>3</SUB>COO, in a closed reactor in situ at temperatures up to 700°C. The reaction produced ferromagnetic core-shell Fe<SUB>3</SUB>O<SUB>4</SUB>-carbon nano-composite without need for a solvent or catalyst. |
| Proceedings Inclusion? |
Definite: A CD-only volume |