First principles calculation of noble gas atoms properties in 3C-SiC

Laurent Pizzagalli (1)

1 PPrime [Poitiers] - Institut Pprime [UPR 3346]

First-principles calculations were performed to investigate the properties of single noble gas atoms (He, Ne, Ar, Kr, Xe) in 3C-SiC. Three cases were considered: (i) a noble gas atom in a perfect crystal, (ii) in the neighborhood of a monovacancy, (iii) and of a divacancy. For each case the stable configurations were determined, as well as their formation energies. The mobility of He, Ne and Ar interstitials was studied, and the associated migration energies were calculated. Our results were discussed and compared to available experimental or theoretical works.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Laurent Pizzagalli. First principles calculation of noble gas atoms properties in 3C-SiC. Journal of Nuclear Materials, 2012, 429 (1-3), pp.329. ⟨10.1016/j.jnucmat.2012.06.022⟩. ⟨hal-00728924⟩