Radiotekhnika
Publishing house Radiotekhnika

"Publishing house Radiotekhnika":
scientific and technical literature.
Books and journals of publishing houses: IPRZHR, RS-PRESS, SCIENCE-PRESS


Тел.: +7 (495) 625-9241

 

Structural features and phase transition in nanostructured vanadium dioxide films

Keywords:

R.N. Nenashev – Student, Faculty of Chemistry, M.V. Lomonosov Moscow State University. E-mail: roman.nenashev@gmail.ru
D.S. Seregin – Ph.D. (Eng.), Head of Department «Technological Center», MIREA. E-mail: d_seregin@mirea.ru
V.P. Zlomanov – Dr.Sc. (Chem.), Professor, M.V. Lomonosov Moscow State University. E-mail: zlomanov@inorg.chem.msu.ru


Nanostructured vanadium dioxide films was synthesized by sol-gel method with thickness of 40…200 nm. Vanadyl acetylacetonate was used as the precursor from which was prepared a methanol sol and deposited on a silicon substrate by centrifugation. It is considered that increasing number of layers occurs thickening of film, changing the shape and orientation of the crystal grains and they size distribution. Influence of the structure and thickness of films on the parameters of phase transition was investigated. It was determined that height of hysteresis loop depends on the film thickness, that half-width depends on the size of the crystallites and symmetry depends on the uniformity of the distribution of the crystallite size.
References:

  1. Morin F.J. Oxides Which Show a Metal-to-Insulator Transition at the Neel Temperature // Phys. Rev. Lett. 1959. V. 3. № 1. P. 34.
  2. Takahashi Y., Kanamori M., Hashimoto H., et al. Prepara-tion of VO2 films by organometallic chemical vapour depo-sition and dip-coating // J. Mater. Sci. 1989. V. 24. P.192.
  3. Sihai Chen, Hong Ma, Xinjian Yi, et al. Smart VO2 thin film for protection of sensitive infrared detectors from strong laser radiation // Sens. Act. A. 2004. V. 115. № 1. P. 28.
  4. Xiqu Chen, Qiang Lu, Xinjian Yi Smart window coating based on nanostructured VO2 thin film // Optik. 2012. V. 123. № 13. P. 1187.
  5. Roach W.R. Holographic Storage in VO2 // Appl. Phys. Lett. 1971. V. 19. № 11. P. 453.
  6. Mei Pan, Hongmei Zhong, Shaowei Wang, et al. Properties of VO2 thin film prepared with precursor VO(acac)2 // J. of Cryst. Growth. 2004. V. 265. P. 121.
  7. Grybos R., Samotus A., Popova N., et al. Kinetics of oxidation of vanadyl acetylacetonate by oxygen in methanolic solution // Transition Met. Chem. 1997. V. 22. P. 61.
  8. Samoilenkov S.V. MOCVD of Epitaxial PbO Films Below 400°C Using Water Vapor // Chem. Vap. Deposition. 2006. V. 12. P. 206.

© Издательство «РАДИОТЕХНИКА», 2004-2017            Тел.: (495) 625-9241                   Designed by [SWAP]Studio