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Title: Communication: Investigation of the electron momentum density distribution of nanodiamonds by electron energy-loss spectroscopy

The electron momentum distribution of detonation nanodiamonds (DND) was investigated by recording electron energy-loss spectra at large momentum transfer in the transmission electron microscope (TEM), which is known as electron Compton scattering from solid (ECOSS). Compton profile of diamond film obtained by ECOSS was found in good agreement with prior photon experimental measurement and theoretical calculation that for bulk diamond. Compared to the diamond film, the valence Compton profile of DND was found to be narrower, which indicates a more delocalization of the ground-state charge density for the latter. Combining with other TEM characterizations such as high-resolution transmission electron spectroscopy, diffraction, and energy dispersive X-ray spectroscopy measurements, ECOSS was shown to be a great potential technique to study ground-state electronic properties of nanomaterials.
Authors:
; ; ;  [1]
  1. Shenyang National Laboratory of Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Wenhua Road 72, Shenyang 110016 (China)
Publication Date:
OSTI Identifier:
22493282
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHARGE DENSITY; COMPARATIVE EVALUATIONS; COMPTON EFFECT; DIAMONDS; DIFFRACTION; ELECTRONS; ENERGY-LOSS SPECTROSCOPY; FILMS; GROUND STATES; MOMENTUM TRANSFER; NANOMATERIALS; PHOTONS; SOLIDS; TRANSMISSION ELECTRON MICROSCOPY; VALENCE; X-RAY SPECTROSCOPY