Carbon encapsulation of magnetic metal nanoparticles: correlation between nanoscale structure of carbon matrix and electromagnetic properties

16th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Chekulaev, M.S.^1,3 ; Kozyrev, S.V.^2 ; Ivanov-Omskii, V.I.^3 ; Yastrebov, S.G.^3 ; Zvonareva, T.K.^3 ; Siklitskaya, A.V.^3

Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, Saint-Petersburg, Russia^1

Center for Advanced Studies, Saint-Petersburg, Russia^2

A.F.Ioffe Physico-technical Institute RAS, Saint-Petersburg, Russia^3

关键词: Carbon matrix;    Co content;    Cobalt nanocrystals;    Comparative analysis;    Electromagnetic properties;    EM radiation;    Hydrogenated amorphous carbon films;    Nanoscale structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/572/1/012024/pdf
DOI  :  10.1088/1742-6596/572/1/012024

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

A comparative analysis of modification of Raman spectra of hydrogenated amorphous carbon films containing encapsulated cobalt nanocrystals, their EM radiation losses and distribution function of nanosized fragments of graphene flatness constituting skeleton of amorphous carbon is performed. For this purpose, a model of confinement of graphene phonons by its fragments is developed, for two types of phonons contributing to the D and G peaks of Raman spectra, as a function of Co content.