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Vaporization and Thermodynamic Properties of the NbO2–TiO2 System

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The vaporization and thermodynamic properties of the NbO2–TiO2 system are studied by high-temperature differential mass spectrometry. The samples are evaporated from Knudsen effusion chambers made of tungsten. The partial pressures of the molecular forms of the vapor, the activities of the condensed phase components, the Gibbs energies, and the excess Gibbs energies are determined. It is established that the studied system is characterized by a negative deviation from the ideal behavior.

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REFERENCES

  1. Ritter, E., Dielectric film materials for optical applications, in Physics of Thin Films: Advances in Research and Development, Hass, G., Francombe, M., and Hoffman, R.W., Eds., New York: Academic, 2013.

    Google Scholar 

  2. Khoviv, A.M. and Sidorkin, A.S., Laser-stimulated oxidation of polycrystalline copper, Phys. Solid State, 1995, vol. 37, no. 8, pp. 1381–1382.

    Google Scholar 

  3. Khoviv, D.A., Divakova, N.A., and Zaitsev, S.V., Phase composition evolution of double layer TiO2/Nb2O5/Si structure during vacuum annealing, Kondens. Sredy Mezhfaz. Granitsy, 2010, vol. 12, no. 4, pp. 400–402.

    CAS  Google Scholar 

  4. Golubtsov, I.V., Lapitskii, A.V., and Shiryaev, V.K., On the issue of the volatility of niobium oxides, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1960, vol. 3, no. 4, pp. 571–578.

    CAS  Google Scholar 

  5. Yudin, B.F., Konopelko, M.V., Fedotova, G.V., and Vvedenskii, V.D., Thermodynamical analysis of dissociative evaporation processes of 2-phase mixtures of titanium and niobium oxides, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1983, vol. 26, no. 8, pp. 938–941.

    CAS  Google Scholar 

  6. Segui, M. and Trombe, F., Effect of lanthanum oxide on niobium, tantalum and titanium oxide volatilization at high temperature, C. R. Acad. Sci. C, 1968, vol. 267, no. 17, pp. 1039–1043.

    CAS  Google Scholar 

  7. Termodinamicheskie svoistva individual’nykh veshchestv, Spravochnik (Thermodynamic Properties of Individual Substances, Handbook), Glushko, V.P., Ed., Moscow: Nauka, 1978–1982.

  8. Kazenas, E.K. and Tsvetkov, Yu.V., Isparenie oksidov (Evaporation of Oxides), Moscow: Nauka, 1997.

  9. Kazenas, E.K. and Tsvetkov, Yu.V., Termodinamika ispareniya oksidov (Thermodynamics of Oxide Evaporation), Moscow: LKI, 2008.

  10. Semenov, G.A. and Lopatin, S.I., A study of evaporation in the TiO2-Nb2O5 oxide system by high-temperature mass-spectrometry, Russ. J. Appl. Chem., 2001, vol. 74, no. 6, pp. 901–906.

    Article  CAS  Google Scholar 

  11. Golubtsov, I.V., Lapitskii, A.V., and Shiryaev, V.K., On the volatility of niobium oxides, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1960, vol. 3, no. 4, pp. 571–573.

    CAS  Google Scholar 

  12. Matsui, T. and Naito, K., High temperature vaporization studies on the niobium-oxygen system by mass spectrometric method, Int. J. Mass Spectrom. Ion Phys., 1983, vol. 47, no. 1, pp. 253–256.

    Article  CAS  Google Scholar 

  13. Semenov, G.A., Nikolaev, E.N., and Frantseva, K.E., Primenenie mass-spektrometrii v neorganicheskoi khimii (Application of Mass Spectrometry in Inorganic Chemistry), Leningrad: Khimiya, 1976.

  14. Semenov, G.A. and Stolyarova, V.L., Mass-spektrometricheskoe issledovanie ispareniya oksidnykh sistem (Mass-Spectrometric Study of the Evaporation of Oxide Systems), Leningrad: Nauka, 1990.

  15. Lias, S.G., Bartmess, J.E., Liebman, J.F., Holmes, J.L., Levin, R.D., and Mallard, W.G., Gas-phase ion and neutral thermochemistry, J. Phys. Chem. Ref. Data, 1988, vol. 17, no. Suppl. 1, pp. 1–861.

  16. Paule, R.C. and Mandel, J., Analysis interlaboratory measurements on the vapour pressure of cadmium and silver, Pure Appl. Chem., 1972, vol. 31, no. 3, pp. 397–431.

    Google Scholar 

  17. Paule, R.C. and Mandel, J., Analysis interlaboratory measurements on the vapour pressure of gold, Pure Appl. Chem., 1972, vol. 31, no. 3, pp. 371–394.

    Article  Google Scholar 

  18. Gilles, P.W., Carlson, K.D., Fransen, H.F., and Wahlbeck, P.G., High-temperature vaporization and thermodynamics of the titanium oxides. 1. Vaporization characteristics of the crystalline phases, J. Chem. Phys., 1967, vol. 46, no. 7, pp. 2461–2465.

    Article  CAS  Google Scholar 

  19. Hampson, P.J. and Gilles, P.W., High-temperature vaporization and thermodynamics of the titanium oxides. 7. Mass spectrometry and dissociation energies of TiO (g) and TiO2 (g), J. Chem. Phys., 1971, vol. 55, no. 8, pp. 3708–3711.

    Article  Google Scholar 

  20. Stolyarova, V.L. and Lopatin, S.I., Mass spectrometric study of the vaporization and thermodynamic properties of components in the BaO-TiO2-SiO2 system, Glass Phys. Chem., 2005, vol. 31, no. 2, pp. 132–137.

    Article  CAS  Google Scholar 

  21. Lopatin, S.I., Shugurov, S.M., and Kurapova, O.Yu., Evaporation and thermodynamic properties of the CeO2-TiO2-ZrO2 system, Russ. J. Gen. Chem., 2121, vol. 91, no. 10, pp. 2008–2012.

  22. Lopatin, S.I., Reactivity of gaseous oxides, Russ. J. Inorg. Chem., 2003, vol. 48, no. 3, pp. 397–400.

    Google Scholar 

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Lopatin, S.I. Vaporization and Thermodynamic Properties of the NbO2–TiO2 System. Glass Phys Chem 48, 117–122 (2022). https://doi.org/10.1134/S1087659622020055

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