How can carbon onion transform into diamond-like structure

Ponomareva, I. V.; Чернозатонский, Л. А.

doi:10.1016/s0167-9317(03)00354-x

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…1) simultaneously involve fragments with specific features of diamond (lonsdaleite), graphite, and carbon onions [26], they can serve as a good model accounting for the structure of detonation nanodiamonds [27][28][29][30], as well as for the structural transformations of nanodiamonds into onion-like carbon structures and vice versa [31][32][33][34][35][36]. Below, we will demonstrate that the results of X-ray powder diffraction investigations of the structural transformations occurring in nanodiamonds at least do not contradict the icosahedral structure.…”

Section: Icosahedral Nanoparticlesmentioning

confidence: 93%

Structure of nanodiamonds

2006

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The structure of nanodiamonds is considered within the model of icosahedral nanoparticles with a local diamond-like order and a shell structure. The diffraction from nanoparticles with noncrystallographic (in particular, icosahedral) packings of atoms is analyzed. It is demonstrated that the method proposed for calculating the intensity of coherent scattering by clusters of identical polyatomic aggregates is applicable to the entire diversity of carbon structures existing in the nanoworld.

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Section: Icosahedral Nanoparticlesmentioning

confidence: 93%

Structure of nanodiamonds

2006

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“…They can serve as a good model accounting for the structure of detonation nanodiamonds, as well as for the structural transformations of nanodiamonds into onionlike carbon structures and vice versa (Aleksenskii et al, 1999;Banhart et al, 1997;Tomita et al, 2000Tomita et al, , 2002Roddatis et al, 2002;Ponomareva & Chernozatonskii, 2003;Banhart, 2004;Mykhaylyk et al, 2005).…”

Section: Constructing Icosahedral Packings: General Procedures and Appmentioning

confidence: 99%

“…Thus, the structures of icosahedral diamond-like nanoparticles can simultaneously involve fragments with specific features of diamond, lonsdaleite, graphite and carbon onions joined coherently. They can serve as a good model accounting for the structure of detonation nanodiamonds, as well as for the structural transformations of nanodiamonds into onionlike carbon structures and vice versa (Aleksenskii et al, 1999;Banhart et al, 1997;Tomita et al, 2000Tomita et al, , 2002Roddatis et al, 2002;Ponomareva & Chernozatonskii, 2003;Banhart, 2004;Mykhaylyk et al, 2005).…”

Section: Constructing Icosahedral Packings: General Procedures and Appmentioning

confidence: 99%

Coherent coexistence of nanodiamonds and carbon onions in icosahedral core-shell particles

2007

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The general approach for describing and designing complex hierarchical icosahedral structures is discussed. Structural models of icosahedral carbon nanoparticles in which the local arrangement of atoms is virtually identical to that in diamond are derived. It is shown that icosahedral diamond-like particles can be transformed into onion-like shell structures (and vice versa) by the consecutive smoothing (puckering) of atomic networks without disturbance of their topological integrity. The possibility of coherent coexistence of icosahedral diamond-like core with onion shells is shown.

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“…In particular, the possible mechanism of transformation of carbon onions into diamond with breaking of a large number of chemical bonds was discussed in [21]. It is assumed that the most strained regions (pentagons) of the sequential fullerene shells are destroyed under heating and irradiation.…”

Section: The Diamond-graphite Transition In Icosahedral Nanoparticlesmentioning

confidence: 99%

“…Approximately 70% of the detached "free" atoms move to the outer shells, which, in turn, results in an additional decrease in the interlayer distance. Owing to the contraction of the layers, the onion shells act as "microscopic highpressure chambers" [21] in which the diamond-like structure is formed.…”

Section: The Diamond-graphite Transition In Icosahedral Nanoparticlesmentioning

confidence: 99%

Structural transformations in carbon nanoparticles

Shevchenko

Madison

2006

Glass Phys Chem

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The structure of icosahedral carbon (diamond and onion-like) nanoparticles is discussed. It is shown that, in carbon nanoparticles, the reversible structural transformations of icosahedral particles into particles with a shell structure can occur without breaking of bonds or disturbance of their topological integrity. New structural models are proposed and analyzed for carbon nanoparticles. The diffusionless mechanism of reversible transformations between diamond-like and onion-like particles is proposed for the first time.

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How can carbon onion transform into diamond-like structure

Cited by 13 publications

References 21 publications

Structure of nanodiamonds

Structure of nanodiamonds

Coherent coexistence of nanodiamonds and carbon onions in icosahedral core-shell particles

Structural transformations in carbon nanoparticles

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