| Issue |
Europhys. Lett.
Volume 33, Number 6, February III 1996
|
|
|---|---|---|
| Page(s) | 441 - 446 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00359-2 | |
| Published online | 01 September 2002 | |
Early stages of sintering of silicon nitride nanoclusters: a molecular-dynamics study on parallel machines
Concurrent Computing Laboratory for Materials Simulations,
Department of
Physics & Astronomy and
Department of Computer Science, Louisiana State
University - Baton Rouge, LA 70803-4001
Received:
11
December
1995
Accepted:
11
January
1996
Sintering of 
nanoclusters is investigated with the molecular-dynamics approach. At
2000 K thermally rough nanocrystals develop an asymmetric neck in 100
picoseconds. The neck contains more fourfold than threefold coordinated Si atoms.
Amorphous nanoclusters develop a symmetric neck which has nearly equal number of
threefold and fourfold coordinated Si atoms. In both cases, sintering is driven
by surface diffusion of Si and N atoms. The diffusion is much more rapid in the
neck joining amorphous nanoclusters than in the neck region of nanocrystals.
PACS: 61.43.Fs – Glasses / 61.46.+w – Solid clusters (including fullerenes) and nanoparticles / 81.90.+c – Other topics in materials science
© EDP Sciences, 1996
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