Enhancement of rutile phase formation in TiO2 films deposited on stainless steel substrates with a vacuum arc

Arias, Lina María Franco; Kleiman, A; Vega, Daníel; Fazio, M.; Halac, Emilia B.; Márquez, A.

doi:10.1016/j.tsf.2017.07.047

Cited by 3 publications

(1 citation statement)

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“…As will be shown later, these results are in line with the crystallinity of the samples. Bulk theoretical values are 4.23 g cm −3 for rutile and 3.6 g cm −3 for amorphous TiO2 [16]. Bendavid et al [17] reported a density of 3.62 g cm −3 for TiO2 amorphous films deposited by FCVA.…”

Section: Thin Film Growth and Film Compositionmentioning

confidence: 99%

Tailoring Crystalline Structure of Titanium Oxide Films for Optical Applications Using Non-Biased Filtered Cathodic Vacuum Arc Deposition at Room Temperature

Guillén,

Krause,

Heras

et al. 2021

Coatings

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Titanium oxide films were deposited at room temperature and with no applied bias using a filtered cathodic vacuum arc (FCVA) system in a reactive oxygen environment. The dependence of film growth on two process parameters, the working pressure (Pw) and the O2 partial pressure (pO2), is described in detail. The composition, morphological features, crystalline structure, and optical properties of the deposited films were systematically studied by Rutherford Back Scattering (RBS), Scanning Electron Microscopy (SEM), X-Ray diffraction (XRD), Raman Spectroscopy, UV-vis spectroscopy, and spectroscopic ellipsometry. This systematic investigation allowed the identification of three different groups or growth regimes according to the stoichiometry and the phase structure of the titanium oxide films. RBS analysis revealed that a wide range of TiOx stoichiometries (0.6 < × < 2.2) were obtained, including oxygen-deficient, stoichiometric TiO2 and oxygen-rich films. TiO, Ti2O3, rutile-type TiO2, and amorphous TiO2 phase structures could be achieved, as confirmed both by Raman and XRD. Therefore, the results showed a highly versatile approach, in which different titanium oxide stoichiometries and crystalline phases especially suited for diverse optical applications can be obtained by changing only two process parameters, in a process at room temperature and without applied bias. Of particular interest are crystalline rutile films with high density to be used in ultra-high reflectance metal-dielectric multilayered mirrors, and reduced-TiO2 rutile samples with absorption in the visible range as a very promising photocatalyst material.

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Section: Thin Film Growth and Film Compositionmentioning

confidence: 99%