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Information × Registration Number 0209U001728, 0107U003549 , R & D reports Title Radiation-resistant protective and functional coatings based on silicon carbide popup.stage_title Head Semenov Aleksandr Vladimirovich, Registration Date 03-03-2009 Organization Institute for Single Crystals National Academy of Sciences of Ukraine popup.description2 Experimentally investigated is the influence of irradiation with 10 MeV electrons ( 5 * 10*14 cm-2 - 9*10*19 cm-2 fluences) and subsequent annealing on the optical properties of nanocrystalline silicon carbide films on single-crystalline sapphire substrates. The absorption spectra of irradiated n-SiC films have chages in the UV- and IR - regions connected with interband transitions and the absorption in the disordered areas, respectively. For the first time it is shown that disordering of the films at fluences from 5*10*14 cm-2 to 10*16 cm-2 is followed by ordering of their crystal lattice at further irradiation. Re-distribution of the intensities of the maxima E1= 3.17 eV and E2= 3.42 eV in the optical density spectra of the irradiated and annealed films testifies to the transformation of the rhombohedral SiC polytype into the hexagonal one.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close