We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Temperature Dependent Variations of Phonon Interactions in Nanocrystalline Cerium Oxide.
- Authors
Dogra Pandey, Sugandha; Singh, Jasveer; Samanta, K.; Dilawar Sharma, Nita; Bandyopadhyay, A. K.
- Abstract
The temperature dependent anharmonic behavior of the phonon modes of nanocrystalline CeO2 was investigated in the temperature range of 80–440 K. The anharmonic constants have been derived from the shift in phonon modes fitted to account for the anharmonic contributions as well as the thermal expansion contribution using the high pressure parameters derived from our own high pressure experimental data reported previously. The total anharmonicity has also been estimated from the true anharmonicity as well as quasiharmonic component. In the line-width variation analysis, the cubic anharmonic term was found to dominate the quartic term. Finally, the phonon lifetime also reflected the trend so observed.
- Subjects
CERIUM oxides; TEMPERATURE effect; PHONONS; NANOCRYSTALS; THERMAL expansion
- Publication
Journal of Nanomaterials, 2015, Vol 2015, p1
- ISSN
1687-4110
- Publication type
Article
- DOI
10.1155/2015/492967