Аннотация

We have developed a model for calculating the Raman spectra for optical phonons localized in diamond nanocrystals. The novelty of this approach is that it includes the contribution of localized phonons with dispersion over the entire Brillouin zone (3D model). The model is refined in that the phonon dispersion is calculated in the well-tested bond-charge model. The effects of the contribution to the Raman spectra from longitudinal optical phonons with frequencies higher than their frequency at the center of the Brillouin zone are considered. Comparative analysis of the calculated spectra and experimental spectra obtained from nanopowders and nanocrystalline diamond film is performed.

Язык оригиналаанглийский
Страницы (с-по)816-824
Число страниц9
ЖурналJournal of Experimental and Theoretical Physics
Том129
Номер выпуска5
DOI
СостояниеОпубликовано - 1 ноя 2019

Fingerprint Подробные сведения о темах исследования «Localization of Optical Phonons in Diamond Nanocrystals». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать