Shiryaev, A A and Iakoubovskii, K and Grambole, D and Dubrovinskaia, N (2006) Spectroscopic study of defects and inclusions in bulk poly-~and nanocrystalline diamond aggregates. Journal of Physics: Condensed Matter, 18 (40). L493-L501.
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Official URL: http://stacks.iop.org/0953-8984/18/L493
Recently, a novel form of nanodiamond exhibiting unusual mechanical properties has been synthesized by high-pressure high-temperature (HPHT) treatment of C60 fullerene, amorphous carbon and diamond powder. In this study, we have characterized the dominant defects in this nanodiamond by a combination of optical absorption, luminescence, Raman, electron spin resonance and elastic recoil detection techniques. Unusually high concentrations ([?]0.4 at.%) of hydrogen and very low concentrations of nitrogen ([?]10[?]5 at.%) have been detected in diamond grown from C60. Although most of hydrogen is shown to originate from inclusions of foreign phases, such as water, significant concentrations ([?]0.01 at.%) of hydrogen were also detected as a point defect in the nanodiamond grains. Observed structural differences between the samples made from various carbonaceous materials are attributed to different behaviour of the starting compounds during HPHT treatment.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||06 Feb 2010 11:10|
|Last Modified:||06 Feb 2010 11:53|
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