On the origin of a third spectral component of C1s XPS-spectra for nc-TiC/a-C nanocomposite thin films

Lewin, Erik; Persson, Per; Lattemann, Martina; Stüber, M.; Gorgoi, Mihaela; Sandell, A.; Ziebert, Carlos; Schäfers, F.; Braun, W.; Halbritter, J.; Ulrich, S.; Eberhardt, W.; Hultman, Lars; Siegbahn, Hans; Svensson, S.; Jansson, Ulf

doi:10.1016/j.surfcoat.2007.12.038

Cited by 172 publications

(92 citation statements)

References 31 publications

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“…Fitting of the C1s spectrum shows that the contribution to the peak at 282.4 eV, denoted C-Si, is not only from C-Si bonds, but probably also from sputtering damage and an interfacial state. The latter has been observed in nanocomposite TiC coatings and is known as TiC* [29,30,31]. (002) planes (see HREM and FFT insets in Figure 5a).…”

Section: Resultsmentioning

confidence: 85%

Microstructure evolution of Ti–Si–C–Ag nanocomposite coatings deposited by DC magnetron sputtering

et al. 2010

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Nanocomposite coatings consisting of Ag and TiC x (x<1) crystallites in a matrix of amorphous SiC were deposited by high-rate magnetron sputtering from Ti-Si-C-Ag compound targets. Different target compositions were used to achieve coatings with a Si content of ~13 at%, while varying the C/Ti ratio and Ag content. Electron microscopy, helium ion microscopy, x-ray photoelectron spectroscopy, and x-ray diffraction were employed to trace the Ag segregation during deposition and possible decomposition of the amorphous SiC. Eutectic interaction between Ag and Si is observed and the Ag forms threading grains that coarsen with increased coating thickness. The coatings can be tailored for conductivity horizontally or vertically, by controlling the shape and

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Section: Resultsmentioning

confidence: 85%

Microstructure evolution of Ti–Si–C–Ag nanocomposite coatings deposited by DC magnetron sputtering

et al. 2010

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“…In both series, the intensity around 282.6 eV increases as a result of Pt-alloying, this is where a contribution from C partly bonded to Pt and Ti would be expected, and is hence consistent with a solid solution carbide (Ti 1-x Pt x )C y . Overlapping with the C-Pt contribution is also a contribution, denoted C-Ti*, which originates from the interface nc-TiC | a-C [17,26]. Additionally, any sputterdamage is also expected to contribute to the intensity in this region [19].…”

Section: Resultsmentioning

confidence: 99%

Carbide and nanocomposite thin films in the Ti–Pt–C system

Lewin

Buchholt

et al. 2010

Thin Solid Films

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Thin films in the Ti-Pt-C system were deposited by non-reactive, DC-magnetron sputtering.Samples were characterised using X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. A previously not reported metastable solid solution carbide, (Ti 1-x Pt x )C y with a Pt/Ti ratio of up to 0.43 was observed. This solid solution phase was present both as single phase in polycrystalline samples, and together with amorphous carbon (a-C) in nanocomposite samples. Annealing of nanocomposite samples lead to decomposition of the solid solution phase and formation of a nc-TiC x /a-C/nc-Pt nanocomposite. Test sensors for automotive gas exhausts manufactured from such a three-phase material suffers from complete oxidation of the coating at 400 °C with no observed sensor activity.

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“…Hence the nanocrystalline phase being formed in these coatings is actually Ti(N,C). The small carbon component is approximately 1 eV higher than the Ti-C peak (component B) and corresponds to carbon atoms located at the edge of the Ti(N,C) crystallites [9,21]. At 282.2 eV, the Ti-C binding energy is higher than that for pure TiC/a-C:H coatings [9,20] since this corresponds to carbon incorporated into TiN, to form Ti(N,C), and the presence of the more electronegative nitrogen in the local environment causes the binding energy of the carbon to increase slightly.…”

Section: Chemical Bonding Environment (Xps)mentioning

confidence: 99%

Structure and mechanical properties of low temperature magnetron sputtered nanocrystalline (nc-)Ti(N,C)/amorphous diamond like carbon (a-C:H) coatings

et al. 2010

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On the origin of a third spectral component of C1s XPS-spectra for nc-TiC/a-C nanocomposite thin films

Cited by 172 publications

References 31 publications

Microstructure evolution of Ti–Si–C–Ag nanocomposite coatings deposited by DC magnetron sputtering

Microstructure evolution of Ti–Si–C–Ag nanocomposite coatings deposited by DC magnetron sputtering

Carbide and nanocomposite thin films in the Ti–Pt–C system

Structure and mechanical properties of low temperature magnetron sputtered nanocrystalline (nc-)Ti(N,C)/amorphous diamond like carbon (a-C:H) coatings

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