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Changes in Raman spectra from the surface of titanium foils under their fluorination
- Authors: Sergeev P.B.1, Melnik N.N.1
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Affiliations:
- Lebedev Physical Institute of the Russian Academy of Sciences
- Issue: Vol 88, No 12 (2024)
- Pages: 1926-1931
- Section: Nanooptics, photonics and coherent spectroscopy
- URL: https://journals.rcsi.science/0367-6765/article/view/286515
- DOI: https://doi.org/10.31857/S0367676524120138
- EDN: https://elibrary.ru/EWEOBY
- ID: 286515
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Abstract
The transformation of Raman spectra from titanium foils during their fluorination in gas mixtures was experimentally studied. It was found that fluorination leads to a strong increase in the intensity of scattering bands from the initial components of the nanocoating of titanium foils. A new strong band also appears at 905±5 см-1 and a wide continuum with a maximum of ≈1700 см-1, increasing during fluorination.
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About the authors
P. B. Sergeev
Lebedev Physical Institute of the Russian Academy of Sciences
Author for correspondence.
Email: sergeevpb@lebedev.ru
Branch in Troitsk
Russian Federation, MoscowN. N. Melnik
Lebedev Physical Institute of the Russian Academy of Sciences
Email: sergeevpb@lebedev.ru
Branch in Troitsk
Russian Federation, MoscowReferences
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Supplementary files
Supplementary Files
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2.
Fig. 1. Raman spectra of pure titanium foil (1) and foil after irradiation in air by an electron beam from an ELA installation with a dose of 1 GGy (2).
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3.
Fig. 2. Raman spectra of TiN and TiO2 powders with particle sizes of about 1 μm, respectively, before (1 and 3) and after (2 and 4) fluorination for 29 days in an Ar/F2 gas mixture at 1 atm with a fluorine content of 30 Torr.
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4.
Fig. 3. Raman spectra: the original Ti foil after 5 days of fluorination (1), foil with preliminary irradiation with EP with a dose of 1 GGy and fluorination for 29 days (2), the same foil that worked in KrF-EPL (3 and 4, 3 was recorded on a device with an exciting laser of 532 nm [21], and 4—785 nm), Ti foil in the region of the anatase microcrystal, etched for 1 day (5).
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5.
Fig. 4. Raman spectra of pure Ti foil in the region of minimal etching (1), different areas of pure foil after 24-hour etching (2 and 3), the same foil after 5 days of etching in an Ar/F2 gas mixture (1 atm, 40 Torr F2) (4).
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