Detection and Identification of Nitrogen Centers in Nanodiamond: EPR Studies

Electron paramagnetic resonance (EPR) and electron spin echo (ESE) at X-band and at high-frequency W-band (95 GHz) have been used to study natural diamond nanocrystals, detonation nanodiamond (ND) with a size of ∼ 4.5 nm and detonation ND after high-temperature, high-pressure sintering with a size o...

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Bibliographic Details
Published in:Fullerenes, nanotubes, and carbon nanostructures nanotubes, and carbon nanostructures, 2011-01, Vol.19 (1-2), p.44-51
Main Authors: Ilyin, I. V., Soltamova, A. A., Baranov, P. G., Vul, A. Ya, Kidalov, S. V., Shakhov, F. M., Mamin, G. V., Orlinskii, S. B., Silkin, N. I., Salakhov, M. Kh
Format: Article
Language:English
Subjects:
Carbon
Detonation
EPR
ESE
Nanocomposites
Nanocrystals
Nanodiamond
Nanomaterials
Nanostructure
Nitrogen
Sintering
X-band
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Summary:Electron paramagnetic resonance (EPR) and electron spin echo (ESE) at X-band and at high-frequency W-band (95 GHz) have been used to study natural diamond nanocrystals, detonation nanodiamond (ND) with a size of ∼ 4.5 nm and detonation ND after high-temperature, high-pressure sintering with a size of ∼ 8.5 nm. Isolated nitrogen centers N 0 and nitrogen pairs N 2 + have been detected and identified, and their structure has been unambiguously determined by means of the high frequency EPR and ESE in natural diamond nanocrystals. In detonation ND and detonation ND after sintering, isolated nitrogen centers N 0 have been discovered in nanodiamond core. In addition EPR signals of multivacancy centers with spin 3/2 seem to be observed in nanodiamond core of detonation ND.
ISSN:1536-383X
1536-4046
DOI:10.1080/1536383X.2010.490114