Neutron studies of structural changes in amorphous C60 fullerite under temperature, pressure, and thermobaric effects

Borisova, P. A.; Agafonov, S. S.; Blanter, M. S.; Глазков, В. П.; Соменков, В. А.

doi:10.3103/s1062873813110087

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…The RBMD technique was applied in [9] to packing of various sp 2 and sp 3 carbon structures, to analyze the impact of packing on the x-ray diffraction data analysis. The model developed here is applied to interpreting the experimental data of Section 3 of neutron diffraction by an amorphous C 60 fullerene annealed in a vacuum at 600, 800, 850, 900 and 1000°C [10]. To interpret experimental results (Section 4) we apply the model for N str = 36 and N atom in the range from 14 to 285.…”

Section: Introductionmentioning

confidence: 98%

A method for diffraction-based identification of amorphous sp 2 carbon materials

Neverov

Borisova

Kukushkin

et al. 2015

Journal of Non-Crystalline Solids

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Section: Introductionmentioning

confidence: 98%

A method for diffraction-based identification of amorphous sp 2 carbon materials

Neverov

Borisova

Kukushkin

et al. 2015

Journal of Non-Crystalline Solids

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“…The neutron diffraction study [1] of amorphous C 60 fullerene derivatives produced by vacuum annealing has shown the complete destruction of the initial sample structure at annealing temperatures higher than 850…”

Section: Introductionmentioning

confidence: 99%

“…Such a domain-like structuring enables us to analyze the difference of inverse problem solutions in cases "A" and "B" for the S 25 and S 600 samples from [1].…”

Section: Introductionmentioning

confidence: 99%

“…In [5], we suggested a method for estimating the structural properties of amorphous sp 2 carbon and applied it to the samples studied in [1]. This method enabled us to quantify the Diffraction-based characterization of amorphous sp 2 carbon... 227 structural properties of the samples in terms of the average size and curvature of the sp 2 carbon structures (graphene-like flakes of 14 -285 carbon atoms) as well as to estimate the fraction of the intact C 60 fullerenes in the samples for each annealing temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In [5], we interpreted the neutron powder diffraction patterns from [1] for the amorphous C 60 fullerene obtained by mechanical grinding and subsequent annealing in vacuum at various temperatures (600, 800, 850, 900 and 1000…”

Section: Introductionmentioning

confidence: 99%

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Diffraction-based characterization of amorphous sp2 carbon: sensitivity to domain-like packing of nanostructures

Neverov¹,

Borisova²,

Kukushkin³

et al. 2016

Nanosystems: Phys. Chem. Math.

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We extend our method formerly suggested for structure refinement of the amorphous sp 2 carbon, based on neutron or x-ray diffraction, and applied to amorphous fullerene and its derivatives produced by vacuum annealing. To diagnose heterogeneous media, the method uses the rigid body molecular dynamics simulations of the domain-like packing for a predefined set of structural blocks. Previously, the sensitivity of the results to the variability of mutual positions of these structural blocks was analyzed in two limiting cases: (A) any domain contains only identical structural blocks and (B) all domains are the identical mixtures of many different structural blocks with variable packing of the blocks. Here, we extend this analysis to intermediate cases which correspond to domains of the type "B" with the subdomains of the type "A". Such a structuring corresponds to a partial destruction of the nanoscale structure of the sample (e.g. by low-temperature annealing).

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Characteristics of local atomic configurations in ball‐milled fullerenes

Rud

Kirian

Ніконова³

et al. 2016

Materialwissenschaft Werkst

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Structural changes occurring in C 60 fullerenes after ball-milling processing were studied. The quantitative characteristics of the local atomic configurations were reconstructed by the reverse Monte Carlo method in the structure of pristine and ball-milled fullerenes C 60 , respectively. It is shown that 3-fold atomic rings, indicating complete amorphization of crystalline fullerenes, are dominant in the structure of material after 14 h treatment. The behavior of the distribution of the sphericity coefficient of Voronoi polyhedra validates a gradual structural disordering of molecular crystal of C 60 and, respectively, the formation of amorphous carbon with randomly arranged closepacked structure after continuous ball-milling treatment.

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Neutron studies of structural changes in amorphous C60 fullerite under temperature, pressure, and thermobaric effects

Cited by 7 publications

References 8 publications

A method for diffraction-based identification of amorphous sp 2 carbon materials

A method for diffraction-based identification of amorphous sp 2 carbon materials

Diffraction-based characterization of amorphous sp2 carbon: sensitivity to domain-like packing of nanostructures

Characteristics of local atomic configurations in ball‐milled fullerenes

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