Comparative investigation of NbN and Nb–Si–N films: experiment and theory

• Datum: 2014
• Hauptverfasser: Ivashchenko, V.I., Scrynskyy, P.L., Lytvyn, O.S., Butenko, O.O., Sinelnichenko, O.K., Gorb, L., Hill, F., Leszczynski, J., Kozak, A.O.
• Format: Artikel
• Sprache: English
• Veröffentlicht: Інститут надтвердих матеріалів ім. В.М. Бакуля НАН України 2014
• Schriftenreihe: Сверхтвердые материалы
• Schlagworte: Получение, структура, свойства
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/126127
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Comparative investigation of NbN and Nb–Si–N films: experiment and theory / V.I. Ivashchenko, P.L. Scrynskyy, O.S. Lytvyn, O.O. Butenko, O.K. Sinelnichenko, L. Gorb, F. Hill, J. Leszczynski, A.O. Kozak // Сверхтвердые материалы. — 2014. — № 6. — С. 29-43. — Бібліогр.: 37 назв. — англ.

NbN and Nb–Si–N films have been deposited by magnetron sputtering of the Nb and Si targets on silicon wafers at various powers supplied to the Nb target. The films have been investigated by an atomic force microscope, X-ray diffraction, X-ray photoelectron spectroscopy, nanoindentaion and microindentation. The NbN films were nanostructured, and the Nb–Si–N films represented an aggregation of δ-NbNx nanocrystallites embedded into the amorphous CSi₃N₄ matrix (nc-δ-NbNx/a-CSi₃N₄). The annealing of the films in vacuum showed that their intensive oxidation occurred at annealing temperature higher than 600 °C. To explain the experimental results on the Nb–Si–N films, first-principles molecular dynamics simulations of the NbN(001)/CSi₃N₄ heterostructures have been carried out.