https://doi.org/10.1140/epjd/e2005-00136-3
Electronic structure of diamond/graphite composite nanoparticles
1
Nikolaev Institute of Inorganic Chemistry SB RAS, av.Ak.Lavrentieva
3, Novosibirsk 630090, Russia
2
Boreskov Institute of Catalysis SB RAS, av.Ak.Lavrentieva 5,
Novosibirsk 630090, Russia
3
BESSY II, Albert-Einstein-Strasse15, 12489 Berlin, Germany
Corresponding author: a spectrum@che.nsk.su
Received:
6
September
2004
Published online:
13
July
2005
The electronic structure of samples produced by nanodiamond annealing has been examined using ultra-soft X-ray emission and X-ray absorption spectroscopy. Analysis of spectra of diamond/graphite composites showed that carbon atoms constituting the nanoparticles are at least in three states: diamond-like state, graphitic-like state and interface carbon, characterized by high electron localization. Comparison between theoretical spectra of the models and experimental spectra suggested the latter states correspond to three-coordinated carbon atoms from diamond surface.
PACS: 61.46.+w – Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals / 73.20.At – Surface states, band structure, electron density of states / 78.70.Dm – X-ray absorption spectra / 78.70.En – X-ray emission spectra and fluorescence
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005
