Перегляд за автором "Tolmachev, A.V."

Сортувати за: Порядок: Результатів:

  • Activator centers in Li₆Gd(BO₃)₃:Ln (Ln = Ce, Eu) single crystals 
    Dubovik, M.F.; Gayduk, O.V.; Grynyov, B.V.; Korshikova, T.I.; Tolmachev, A.V.; Shekhovtsov, A.N.; Yavetskiy, R.P. (Functional Materials, 2004)
    The activator centers in Li₆Gd(BO₃)₃ single crystals doped by Ce and Eu have been investigated. Two types of activator centers inLi₆Gd(BO₃)₃ :Ce single crystals and one activator center type in Li₆Gd(BO₃)₃ :Eu ones have ...
  • Borate single crystals for polyfunctional applications: production and properties 
    Grinyov, B.V.; Dubovik, M.F.; Tolmachev, A.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    Literature data and results of authors' studies are rewieved concerning structure, growing conditions, non-linear optical, piezoelectric and spectral characteristics of borate single crystals Li₂B₄O₇, LiB₃O₅, b-BaB₂O₄, ...
  • Catalytic activity of SiO₂/Au heteronanoparticles in hydrogen peroxide decomposition reaction 
    Matveevskaya, N.A.; Mchedlov-Petrossyan, N.O.; Pazura, Yu.I.; Semynozhenko, V.P.; Tolmachev, A.V. (Functional Materials, 2005)
    А comparative quantitative study of catalytic activity of Au nanoparticles and Si0₂/Au heteronanoparticles of various sizes in decomposition reaction of Н₂О₂ aqueous alkaline solutions. It has been established that the ...
  • Growing of Sm³⁺ doped polycrystalline calcium fluorapatite from aqueous solutions 
    Babayevskaya, N.V.; Savin, Yu.N.; Tolmachev, A.V. (Functional Materials, 2006)
    Polycrystalline samples of Са₁₀(РО₄)₆F₂ (calcium fluor-apatite, FAP) and of Sm³⁺ doped FAP have been obtained by precipitation from aqueous solutions. The optimum conditions to obtain single-phase polycrystalline ...
  • Light scattering by residual pores in Y₂O₃ nanograined ceramics 
    Yavetskiy, R.P.; Shpilinskaya, O.L.; Baumer, V.N.; Doroshenko, A.G.; Tolmachev, A.V.; Petrusha, I.A.; Turkevich, V.Z. (Functional Materials, 2013)
    Correlation between the in-line optical transmittance and residual porosity of Y₂O₃ nanoceramics formed by high-pressure low-temperature sintering has been established. In the limit case, when the pore diameter is much ...
  • Luminescence and radiation-induced defects in Li₂B₄O₇:Eu single crystals 
    Dubovik, M.F.; Tolmachev, A.V.; Grinyov, B.V.; Grin, L.A.; Dolzhenkova, E.F.; Dobrotvorskaya, M.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    Thermostimulated luminescence (TSL) of Li₂B₄O₇ and Li₂B₄O₇:Eu single crystals in the temperature range 290-650K has been studied. Lithium tetraborate (LTB) doped with europium has been found to favour a further increase ...
  • Morphology of lead sulfide crystalline particles in size-limited state 
    Bezkrovnyi, O.S.; Yermolayeva, Yu.V.; Vovk, O.M.; Dobrotvorskaya, M.V.; Chayka, M.A.; Tolmachev, A.V. (Functional Materials, 2014)
    Monocrystalline PbS particles of cubic structure ranging in size from 3 to 500 nm, were obtained. Influence of growth conditions on the final particles size and dispersion of lead sulfide nanocrystals, as well as effects ...
  • Mutual influence of additives of Ca and Si on properties of Cr-doped YAG ceramics 
    Chaika, M.A.; Vovk, O.M.; Safronova, N.A.; Parkhomenko, S.V.; Doroshenko, A.G.; Tolmachev, A.V. (Functional Materials, 2016)
    Cr-doped yttrium aluminum garnet ceramics with different concentration of additives Ca and Si were synthesized by vacuum reaction sintering. It was established that simultaneous doping with Ca and Si effects crucially on ...
  • Nanosized phosphors based on Gd₁₋ₓEuₓPO₄ obtained by low-temperature methods 
    Babayevskaya, N.V.; Kryzhanovskaya, A.S.; Savvin, Yu.N.; Tolmachev, A.V. (Functional Materials, 2008)
    Nanowires (10 to 50 nm wide, up to 2 μm long) and nanoplates (60 to 100 nm wide, 70 to 500 nm long) of europium doped gadolinium orthophosphate with narrow size distribution have been obtained by precipitation from aqueous ...
  • Optical properties of CdS and PbS nanocrystals adsorbed on silica nanoparticles 
    Yermolayeva, Yu.V.; Matveevskaya, N.A.; Semynozhenko, V.P.; Tolmachev, A.V. (Functional Materials, 2006)
    The adsorption mechanism of CdS and PbS semiconductor nanocrystals on the surface of spherical silica particles has been investigated. The presence of quantum size effects in the "core-shell" heteronanostructures with ...
  • SiO₂/Au core-shell nanoparticles: synthesis and characterization 
    Matveevskaya, N.A.; Tolmachev, A.V.; Pazura, Yu.I.; Savvin, Yu.N.; Dukarov, S.V.; Semynozhenko, V.P. (Functional Materials, 2005)
    Preparation of heteronanoparticles of the core-shell type has been described based on single-dispersed spherical nanoparticles of silicon dioxide and gold. Using the colloid chemistry techniques, nanoparticles having ...
  • Synthesis of strontium tetroborate SrB₄O₇ for single crystal growth 
    Korshikova, T.I.; Parkhomenko, S.V.; Tolmachev, A.V.; Yavetskiy, R.P. (Functional Materials, 2007)
    The possiblility of the single phase SrB₄O₇ synthesis the amorphous phase formation stage has been shown. Using XPA and DTA methods, the formation of strontium borate hydrates has been determined to occur at T = 95±5°C in ...
  • Thermostimulated luminescence of SrB₄O₇:Eu²⁺ single crystals 
    Yavetskiy, R.P.; Dolzhenkova, E.F.; Tolmachev, A.V.; Parkhomenko, S.V.; Baumer, V.N. (Functional Materials, 2006)
    Thermallystimulated luminescence (TSL) of SrB₄О₇:Eu²⁺ single crystals irradiated with у and X-ray quanta has been studied for the first time and compared with that of SrB₄О₇ crystals. The induced optical absorption in ...
  • Thermostimulated luminescence of SrB₄O₇ single crystals and glasses 
    Dubovik, M.F.; Korshikova, T.I.; Oseledchik, Yu.S.; Parkhomenko, S.V.; Prosvirnin, A.L.; Svitanko, N.V.; Tolmachev, A.V.; Yavetsky, R.P. (Functional Materials, 2005)
    Thermostimulated luminescence (TSL) of X-ray irradiated SrB₄O₇ single crystals and glasses has been studied for the first time and compared with polycrystalline samples. The TSL of SrB₄O₇ single crystals is due to radiative ...
  • Transparent ceramics of yttrium-aluminum garnet (Y₃Al₅O₁₂) from nanocrystalline powders obtained by co-precipitation 
    Baumer, V.N.; Vovk, E.A.; Vovk, O.M.; Deineka, T.G.; Kosmyna, M.B.; Mateychenko, P.V.; Puzikov, V.M.; Sergienko, Z.P.; Tolmachev, A.V.; Shekhovtsov, A.N.; Yavetskiy, R.P. (Functional Materials, 2008)
    Nanosized powders of yttrium-aluminum garnet Y₃Al₅O₁₂, (YAG) have been obtained by chemical co-precipitation. The effect of the powder structure and morphology on the compactibility and sinterability has been studied. The ...