Raman and EPR spectroscopic studies of chromium-doped diamond-like carbon films

Савченко, Д. В.; Vorlı́ček, V.; Prokhorov, A. A.; Kalabukhova, Ekaterina N.; Lančok, J.; Jelı́nek, M.

doi:10.1016/j.diamond.2018.01.021

Cited by 21 publications

(7 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The higher chromium content specimen, a-C:Si,Cr (2) displayed a larger red shift, a large drop in width and an increased peak ratio. This confirmed the tendency observed in the latter film, the role of chromium as a clustering enhancer [29] and its ability to counterbalance the silicon effect.…”

Section: Insert Table 1 Near Heresupporting

confidence: 85%

“…Among the metallic dopants, chromium is known by its ability to form carbide nanoparticles within the carbon matrix. Chromium (a-C:Cr) doping has also been related to reduction in the residual stresses [29,30] and friction [4,[30][31][32], while increasing the critical load [4,31,32] and fostering cluster formation as the content increases [33].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of chromium doping on high temperature tribological properties of silicon-doped diamond-like carbon films

Rodriguez

Schiller

Proprentner

et al. 2020

Tribology International

View full text Add to dashboard Cite

show abstract

Section: Insert Table 1 Near Heresupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Effect of chromium doping on high temperature tribological properties of silicon-doped diamond-like carbon films

Rodriguez

Schiller

Proprentner

et al. 2020

Tribology International

View full text Add to dashboard Cite

show abstract

“…As shown in Figure 3, the resonance magnetic field values increase as the temperature decreases, which should be explained by the interaction of NEs and LEs in the spin system leading to the exchange coupling between them. This coupling can be expressed by the model of the strong exchange‐coupled NE and LE system in the “bottleneck” mode: [ 26 ]

B_{res} (T) = \frac{B_{res,LE} \cdot χ_{LE}^{*} + B_{res,NE} \cdot χ_{NE}^{*}}{χ_{LE}^{*} + χ_{NE}^{*}}

where B res,LE and B res,NE are the resonance magnetic field positions for LE and NE, respectively; χ LE * = χ CW (1 + α · χ P ), χ LE * = χ CW (1 + α · χ P ), and α is the exchange coupling constant.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed ESR study of DLC:Cr films deposited on SiO 2 substrates was performed in a wide temperature range by Savchenko et al [ 26 ] Two ESR signals were observed: one from sp 2 ‐coordinated carbon‐related defect (CRD) and another from interface defect. It was suggested that the spin density of CRD lowers with the increase of Cr content due to the appearance of CCr bonds.…”

Section: Introductionmentioning

confidence: 99%

Electron Spin Resonance Study of Hydrogen‐Free Germanium‐Doped Diamond‐Like Carbon Films

Holiatkina

Савченко

Kocourek

et al. 2022

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

In memory of Prof. Miroslav Jelínek IntroductionDiamond-like carbon films (DLC) are amorphous carbon (C) films with a significant proportion of sp 3 bonds. [1] The DLC films are wide-bandgap semiconductors with high mechanical hardness, chemical resistance, and optical transparency. The physical properties of DLC films are determined by the hydrogen concentration and the relative ratio of hybridized sp 3 carbon (C) bonds and tetrahedral bonds or trigonal sp 2 bonds. [2] DLC coatings are widely used in optical windows, magnetic storages, thin-film sensors, antireflective optical coatings, automotive parts, biomedical coatings, microelectromechanical devices, etc. [1,3] Moreover, DLC films can be successfully applied in color gradient coating, energy saving, optical filters, and bionics fields. [4] Recently it was reported that due to its isotropic structure the DLC films are promising for the homogenization of Li ions after they pass a polypropylene separator in lithium-metal anodes. [5] The latest study on the structural evolution of the laser-annealed DLC films deposited on the cemented carbide substrates into reduced graphene oxide shows its importance in the development of nanomaterials based on cemented carbide/ reduced graphene oxide as a low-cost and highly efficient electrocatalyst for hydrogen evolution reaction. [6] Such unique properties of DLC films as high hardness, high wear resistance, high corrosion resistance and chemical inertness, low coefficient of friction, very low surface roughness, and excellent infrared light transparency make them attractive as biocompatible materials. Thus, the DLC coatings are applicable for orthopedic, cardiovascular, contact lenses, catheter, denture replacement, etc. The biocompatibility of DLC films is determined by the interaction of cells with the DLC surface and can be investigated by characterizing the cytotoxicity, protein adsorption, or microphase adhesion properties of the films.It is known that the structure and properties of DLC films vary in a wide range depending on the C sp 3 /sp 2 ratio and doping with various elements. [7,8] One of the main disadvantages of DLC thin films for practical application is weak adhesion to the substrates due to high internal stresses that can be overcome by the incorporation of metals into the DLC film. [9] Therefore, the doping of DLC films with antimicrobial metals leading to higher adhesion and biocompatibility is very prospective for their application as biocompatible materials.

show abstract

“…Diamond like carbon (DLC) coating because of its special properties is one of the interesting subjects nowadays [7][8][9][10], while the first one was fabricated by Aisenberg and Chabot 50 years ago [11]. Some of the properties are low friction factor, high abrasion resistance, optical transparency, high hardness factor, heat stability, chemical neutral and biocompatibility [11,12].…”

Section: Introductionmentioning

confidence: 99%

The effect of initial pressure on growth of FeNPs in amorphous carbon films

et al. 2018

View full text Add to dashboard Cite

Iron nanoparticles in amorphous hydrogenated carbon films (FeNPs@a-C:H) were prepared with RF-sputtering and RFPECVD methods by acetylene gas and Fe target. In this paper, deposition and sputtering process were carried out under influence of different initial pressure gas. The morphology and roughness of surface of samples were studied by AFM technique and also TEM images show the exact size of FeNPs and encapsulated FeNPs@a-C:H. The localized surface plasmon resonance peak (LSPR) of FeNPs was studied using UV-vis absorption spectrum. The results show that the intensity and position of LSPR peak are increased by increasing initial pressure. Also, direct energy gap of samples obtained by Tauc law is decreased with respect to increasing initial pressure.

show abstract

Raman and EPR spectroscopic studies of chromium-doped diamond-like carbon films

Cited by 21 publications

References 52 publications

Effect of chromium doping on high temperature tribological properties of silicon-doped diamond-like carbon films

Effect of chromium doping on high temperature tribological properties of silicon-doped diamond-like carbon films

Electron Spin Resonance Study of Hydrogen‐Free Germanium‐Doped Diamond‐Like Carbon Films

The effect of initial pressure on growth of FeNPs in amorphous carbon films

Contact Info

Product

Resources

About