 |
 |
|
Latham, C. D., Haffenden, G. L., Heggie, M. I., Suarez-Martinez, I. & Ewels, C. P. (2010) Comment on "Increase in specific heat and possible hindered rotation of interstitial C-2 molecules in neutron-irradiated graphite". Phys. Rev. B, 82 056101.
Added by: Laurent Cournède (2016-03-10 21:37:32) |
| Type de référence: Article DOI: 10.1103/PhysRevB.82.056101 Numéro d'identification (ISBN etc.): 1098-0121 Clé BibTeX: Latham2010 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: Defects, diffusion, Nucleation, radiation damage Créateurs: Ewels, Haffenden, Heggie, Latham, Suarez-Martinez Collection: Phys. Rev. B |
Consultations : 1/532
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
|
Iwata and Watanabe's model for the observed low-temperature specific heat of neutron-irradiated graphite [T. Iwata and M. Watanabe, Phys. Rev. B 81, 014105 (2010)] assumes that self-interstitial atoms exist as clusters of nearly free C-2 molecules. We suggest that their hypothesis is not supported by other experiments and theory, including our own calculations. Not only is it inconsistent with the long-known kinetics of interstitial prismatic dislocation loop formation, density-functional theory shows that the di-interstitial is covalently bonded to the host crystal. In such calculations no prior assumptions are made about the nature of the bonding, covalent or otherwise.
Added by: Laurent Cournède |