Raman scattering (RS) studies of graphite-like phases BC x N (g-BC x N) obtained by various methods were carried out using an excitation laser operating in the near infrared range. The most typical for g-BC x N under this excitation are two peaks at 1300 cm-1 (D-peak) and 1595 cm-1 (G-peak). It is shown that the origin of the D and G peaks is associated with disordered graphite: the D peak is observed due to a change in the selection rules, and its intensity correlates with the size of the sp 2 graphite cluster in polycrystalline graphite; the G band is associated with the graphite mode active in the RR in the E 2g plane. Displacement of the D-peak in g-BC x N (1300 cm ? 1 ) compared to the position of this peak in graphite (1355 cm ? 1 ) can be explained by the dispersion of the position of the D-peak with the excitation wavelength. The Raman line with a center at 1260 cm ? 1 , which can be associated with the mode active in Raman, is observed only for samples with a high degree of crystallinity and for Raman spectra obtained at high pressures and high temperatures.
Cand. physical-mat. Sci. P. V. ZININ
1 (
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ), Cand. physical-mat. D. Yu. VELIKOVSKY
1 , SK SHARMA
2 , A.K. MISRA
2 , Cand. tech. V.P. FILONENKO
3 , Ph.D. tech. Sciences A. S. ANOKHIN
4 , Cand. physical-mat. sciences IB KUTUZA
1 , S. BAT
5 , prof. R. RIDEL
5 ;
1 Scientific and Technological Center for Unique Instrumentation of the Russian Academy of Sciences (Russia, Moscow)
2 School of Oceanic and Terrestrial Sciences and Technologies, University of Hawaii (USA, Moscow) Honolulu, Hawaii)
3 LF Vereshchagin Russian Academy of Sciences (Russia, Troitsk)
4 Institute of Metallurgy and Materials Science named after A. A. Baikova Russian Academy of Sciences (Russia, Moscow)
5 Technical University of Darmstadt (Germany, Darmstadt)
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