Electron microscopy studies of FCC carbon particles

Jarkov, S. M.; Titarenko, Ya. N.; Чурилов, Г. Н.

doi:10.1016/s0008-6223(98)00072-4

Cited by 34 publications

(41 citation statements)

References 6 publications

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“…The observation of a new carbon phase in thin films and nanoparticles with the face-centered-cubic structure (fcc, space group Fm 3m) has recently been reported [1][2][3][4][5][6][7]. Electron microscopy studies of carbon nanoparticles produced in a plasma-chemical synthesis revealed an fcc crystal structure with a lattice constant of 3.57…”

Section: Introductionmentioning

confidence: 99%

“…A [4]. More recently, it was shown that a thin film of fcc carbon is formed on a diamond surface as a result of treatment in a hydrogen plasma [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…The presence of this peak in the EELS spectra distinguishes fcc carbon from both diamond and graphite carbon phases. The existence of carbon thin films and nanoparticles with the fcc structure has been taken as evidence that fcc carbon is a true metastable phase of pure carbon [4], rather than a forced structure stabilized by the interaction with the substrate and/or impurities.…”

Section: Introductionmentioning

confidence: 99%

“…It is clear that the tight-binding calculations overestimate the equilibrium cell volume of fcc carbon [5] and, hence, they cannot be used to support the observed lattice parameter of fcc carbon [4][5][6][7]. Therefore, in order to establish if the fcc structure is a metastable phase of carbon, a study of the lattice stability for this structure is needed.…”

Section: Introductionmentioning

confidence: 99%

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Structural stability of carbon in the face-centered-cubic (Fm m) phase

Murrieta

Tapia

Coss

2004

Carbon

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Section: Introductionmentioning

confidence: 99%

“…A [4]. More recently, it was shown that a thin film of fcc carbon is formed on a diamond surface as a result of treatment in a hydrogen plasma [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural stability of carbon in the face-centered-cubic (Fm m) phase

Murrieta

Tapia

Coss

2004

Carbon

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“…Numerous carbon modifications were found by chemical vapor deposition (CVD) of thin films. 16,17 In most of the studies, the lattice constant assumes the value of 3.6 6 0.05 Å . Furthermore, it should be noted from the HRTEMimages that the crystallites form with the [011] direction of FCC lattice, normally to the film surface.…”

mentioning

confidence: 99%

The local crystallization in nanoscale diamond-like carbon films during annealing

Kolpakov

Poplavsky

Галкина

et al. 2014

Applied Physics Letters

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The local crystallization during annealing at 600 °C in nanoscale diamond-like carbon coatings films grown by pulsed vacuum-arc deposition method was observed using modem techniques of high-resolution transmission electron microscopy. The crystallites formed by annealing have a face-centred cubic crystal structure and grow in the direction [011 ] as a normal to the film surface. The number and size of the crystallites depend on the initial values of the intrinsic stresses before annealing, which in turn depend on the conditions of film growth. The sizes of crystallites are 10 nm for films with initial compressive stresses of 3 GPa and 17 nm for films with initial compres sive stresses of 12 GPa. Areas of local crystallization arising during annealing have a structure dif ferent from the graphite. Additionally, the investigation results of the structure of nanoscale diamond-like carbon coatings films using Raman spectroscopy method are presented, which are consistent with the transmission electron microscopy research results.[http://dx.doi.Org/10.1063/l.4903803]The negative influence of high intrinsic compressive stresses in diamond-like carbon (DLC) films with a high con tent of sp3-phase, restraining their widespread application in micromechanics, is well known.1,2 However, many research ers use the intrinsic stresses purposefully to form carbon coatings with special properties. In particular, the investiga tion of multilayer carbon-based structures, with different contents of sp3 and sp2-phases, which are characterized by different values of electrical conductivity and the internal stresses, is described.3,4 In this case, the changing accelerat ing potential of the substrate is used. It allows to accelerate carbon ions and forms layers with different properties, which is necessary for the method of vacuum-arc deposition with the filtration of the plasma flow.5The structure and electrical properties of the tetrahedral amorphous carbon (ta-C) films with 70%-88% sp3 content were investigated by atomic force microscopy (AFM), trans mission electron microscopy (ТЕМ), and Raman spectros copy as a function of annealing temperature in the range of 25-1100 °C.6 ТЕМ investigation is confirmed that the clus ters appear not only at the surface of the films but also in the bulk. The growth and the partial orientation of the sp2-bonded nanoclusters in the size range of 1-3 nm are accom panied by a large reduction in the film intrinsic stress, which decreases sharply in the temperature range of 500-600 °C. Therefore, temperature of 600 °C was selected in the present work as the critical temperature at which significant changes in the structure and properties of carbon coatings are beginning.The pulsed vacuum-arc method7 for deposition of DLC films allows to exclude the using of the electrostatic ion acceleration by applying a negative potential to the substrate Author to whom correspondence should be addressed. Electronic mail: kolpakov@bsu. edu.ru and to reduce undesirable heating of the carbon film during the deposition, ...

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Polymorphism of Crystalline Phases

Delhaès¹

2013

Carbon‐based Solids and Materials

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Electron microscopy studies of FCC carbon particles

Cited by 34 publications

References 6 publications

Structural stability of carbon in the face-centered-cubic (Fm m) phase

Structural stability of carbon in the face-centered-cubic (Fm m) phase

The local crystallization in nanoscale diamond-like carbon films during annealing

Polymorphism of Crystalline Phases

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