Highly oriented pyrolytic graphites are irradiated with 40.5-MeV and 67.7-MeV 112Sn-ions in a wide range of fluences: 1 脳 1011 ions/cm21 脳 1014 ions/cm2. Raman spectra in the region between 1200 cm1 and 3500 cm1 show that the disorder induced by Sn-ions increases with ion fluence ...
Raman spectra of graphite fibers intercalated with K, Rb and Cs are reported. X-Ray diffraction is used to characterize the fibers with respect to staging. We report results mainly for GY70, a highly graphitic commercially available fiber, which is polyacrylonitrile (PAN) based, and some ...
(sr379@eng.cam.ac.uk) 2 Institutf¨urFestk¨orperphysik,TechnischeUniversit¨atBerlin, Hardenbergstr.36,10623Berlin,Germany Publishedonline14September2004 WepresentareviewoftheRamanspectraofgraphitefromanexperimentaland theoreticalpointofview.Thedisorder-inducedRamanbandsinthismaterialhave beenapuzzlingRaman...
Raman spectra are reported from single crystals of graphite and other graphite materials. Single crystals of graphite show one single line at 1575 cm1. For the other materials like stress‐annealed pyrolitic graphite, commercial graphites, activated charcoal, lampblack, and vitreous carbon another lin...
On the contrary, the G0 band has nothing to do with the G peak, but is the second order of zone-boundary phonons. Since zone-boundary phonons do not satisfy the Raman fundamental selection rule, they are not seen in first order Raman spectra of defect-free graphite [17]. Such phonons...
Raman spectraCrystal defectsDispersionGraphene sheets that are now routinely obtained by the exfoliation/reduction of graphite oxide exhibit Raman spectra unlike traditional graphene systems. The general attributes of the Raman spectra of these 'wrinkled graphene' are first reaffirmed by evaluating the ...
insight into the evolution of the electronic band structure for applications inFLG-basedelectronic devices inthenear future. The main features in Raman spectra of graphite-based materials are the Gand Dbands and the second order of the D band, so-called 2D, all of which change in shape, posi...
The values of the param... LM Malard,J Nilsson,DC Elias,... - 《Physical Review B Condensed Matter》 被引量: 366发表: 2007年 Preparation of graphene by exfoliation of graphite using wet ball milling graphenemultilayersnanostructured materialspowdersRaman spectrascanning electron microscopyWet ball ...
Fig. 4.38 shows the Raman spectra of graphite, GO, graphene, and N-doped graphenes. The D and G bands in graphite powder clearly indicate no disruption. In addition, the ID/IG values for GO, graphene, and various N-graphenes are about 0.95, 1.00, and 0.99–1.10, respectively. These ...
V. et al. Interpretation of certain characteristics in Raman spectra of graphite and glassy carbon. Opt. Spectroscopy 62, 612–616 (1987). Google Scholar Pocsik, I., Hundhausen, M., Koos, M & Ley, L. Origin of the D peak in the Raman spectrum of microcrystalline graphite. J. Non-...