Search Results - "Vovk, O.M"

Influence of CaO and SiO2 additives on the sintering behavior of Cr,Ca:YAG ceramics prepared by solid-state reaction sintering by Chaika, M.A., Mancardi, G., Vovk, O.M.

“…Yttrium aluminum garnet optical ceramics (Y3−xCaxAl4.95Cr0.05O12) doped with 0.1 at.% of chromium ions and 0.5, 0.8 and 1.2 at.% of calcium ions were prepared…”
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Influence of calcium concentration on formation of tetravalent chromium doped Y3Al5O12 ceramics by Chaika, M.A., Dulina, N.A., Doroshenko, A.G., Parkhomenko, S.V., Gayduk, O.V., Tomala, R., Strek, W., Hreniak, D., Mancardi, G., Vovk, O.M.

“…Yttrium Aluminium Garnet (YAG) ceramics doped with chromium were prepared by solid-state reactive sintering in a vacuum. The influence of the charge…”
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Effective photopolymerization of C60 films under simultaneous deposition and UV light irradiation: Spectroscopy and morphology study by Karachevtsev, V.A, Mateichenko, P.V, Nedbailo, N.Yu, Peschanskii, A.V, Plokhotnichenko, A.M, Vovk, O.M, Zubarev, E.N, Rao, A.M

“…An effective method for uniform photopolymerization of C60 films using simultaneous deposition and irradiation with ultraviolet (UV) light is described. The…”
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A new approach for measurement of Cr4+ concentration in Cr4+:YAG transparent materials: Some conceptual difficulties and possible solutions by Chaika, M., Lisiecki, R., Lesniewska-Matys, K., Vovk, O.M.

“…In the present work we provide an analysis of the accuracy of the calculation of Cr4+ concentration in Cr4+:YAG using absorption spectroscopy…”
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The role of Ca2+ ions in the formation of high optical quality Cr4+,Ca:YAG ceramics by Chaika, M.A., Dluzewski, P., Morawiec, K., Szczepanska, A., Jablonska, K., Mancardi, G., Tomala, R., Hreniak, D., Strek, W., Safronova, N.A., Doroshenko, A.G., Parkhomenko, S.V., Vovk, O.M.

“…The distribution of Ca2+ ions in high optical quality Cr4+,Ca:YAG ceramics after vacuum sintering followed by air annealing was successfully investigated by…”
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Thermoelastic State of a Thermosensitive Half Space and a Thermosensitive Layer in Contact Under the Conditions of Complex Heat Exchange by Vovk, O. M., Solyar, T. Ya

“…We solve a nonstationary problem of heat conduction for a thermosensitive half space in contact with a thermosensitive layer under the conditions of complex…”
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The effect of the redox potential of annealing environment on the mechanical properties of Al2O3-YAG:Ce eutectics by Voloshin, A.V., Vovk, O.M., Siryk, Yu.V., Grin, L.O., Baranov, V.V., Mateichenko, P.V., Fedorov, A.G., Nizhankovskyi, S.V.

“…Mechanical characteristics of the eutectics Al2O3-Y3Al5O12:Ce grown by the method of horizontal directional crystallization were established. The influence of…”
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Thermoelastic State of Contacting Thermally Sensitive Half Space and Thermally Sensitive Layer by Vovk, O.M, Solyar, T.Ya

“…By using the numerical inverse Laplace transform based on the modified Prudnikov formula, we construct the solution of a nonstationary problem of heat…”
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Effect of particle size and morphology on the properties of luminescence in ZnWO4 by Lisitsyn, V.M., Valiev, D.T., Tupitsyna, I.A., Polisadova, E.F., Oleshko, V.I., Lisitsyna, L.A., Andryuschenko, L.A., Yakubovskaya, A.G., Vovk, O.M.

“…We investigated pulsed photoluminescence and pulsed cathodoluminescence in ZnWO4 crystals and composite materials based on dispersed powders of zinc tungstate…”
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Peculiarities of the growth of KDP single crystals with incorporated aluminium oxyhydroxide nanoparticles by Pritula, I.M., Kosinova, A.V, Vorontsov, D.A., Kolybaeva, M.I, Bezkrovnaya, O.N., Tkachenko, V.F., Vovk, O.M, Grishina, E.V.

“…Grown for the first time are KH2PO4 (KDP) crystals with incorporated aluminium oxyhydroxide Al2O3·nH2O nanoparticles (n=3.5–3.6). The influence of the…”
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Effect of high-temperature annealing on the optical and photoluminescence properties of nanocrystalline SiC films by Semenov, A.V., Lopin, A.V., Puzikov, V.M., Vovk, O.M., Dmitruk, I.N., Romano, V.

“…The optical and photoluminescence (PL) properties of nanocrystalline 3C-SiC films and the effect of the boundary regions between the nanocrystals were studied…”
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Formation of ZnS nano- and microparticles from thiourea solutions by Sofronov, D.S., Sofronova, E.M., Baumer, V.N., Kudin, K.A., Mateichenko, P.V., Vovk, O.M., Bryleva, E.Yu, Belikov, K.N.

“…[Display omitted] • ZnS particles can be synthesized using precipitation by thiourea. • The thiourea concentration plays an important role for the formation of…”
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Influence of sulfate ions on properties of co-precipitated Y3Al5O12:Nd3+ nanopowders by DEINEKA, T. G, DOROSHENKO, A. G, MATEYCHENKO, P. V, TOLMACHEV, A. V, VOVK, E. A, VOVK, O. M, YAVETSKIY, R. P, BAUMER, V. N, SOFRONOV, D. S

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Low-agglomerated yttria nanopowders via decomposition of sulfate-doped precursor with transient morphology by Yavetskiy, R.P., Kosyanov, D.Yu, Baumer, V.N., Doroshenko, A.G., Fedorov, A.I., Matveevskaya, N.A., Tolmachev, A.V., Vovk, O.M.

“…The fabrication peculiarities of low-agglomerated yttria (Y2O3) nanopowders via thermal decomposition of sulfate-doped precursor with transient morphology were…”
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Investigation of the static thermoelastic state of a thermosensitive hollow cylinder under convective-radiant heat exchange with environment by Popovych, V. S., Vovk, O. M., Harmatii, H. Yu

“…Two variants of the method of successive approximations for the solution of the nonlinear problems of heat conduction are tested by the example of the…”
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Influence of sulfate ions on properties of co-precipitated Y 3Al 5O 12:Nd 3+ nanopowders by Deineka, T.G., Doroshenko, A.G., Mateychenko, P.V., Tolmachev, A.V., Vovk, E.A., Vovk, O.M., Yavetskiy, R.P., Baumer, V.N., Sofronov, D.S.

“…▶ A new sulfate-containing precursor of YAG has been synthesized by co-precipitation method. ▶ Sulfate ions doped YAG nanopowders have better dispersion…”
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Permeability of C 60 films deposited on polycarbonatesyloxane to N 2, O 2, CH 4, and He gases by Karachevtsev, V.A., Plokhotnichenko, A.M., Pashynska, V.A., Glamazda, A.Yu, Vovk, O.M., Rao, A.M.

“…In this study, we report on the gas permeability of non-polymerized and polymerized fullerene films (thickness about 0.5 μm) grown on an organic polymer…”
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Permeability of C60 films deposited on polycarbonatesyloxane to N2, O2, CH4, and He gases by KARACHEVTSEV, V. A, PLOKHOTNICHENKO, A. M, PASHYNSKA, V. A, GLAMAZDA, A. Yu, VOVK, O. M, RAO, A. M

“…In this study, we report on the gas permeability of non-polymerized and polymerized fullerene films (thickness about 0.5mum) grown on an organic polymer…”
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Structure and phase composition of sputter deposits from a C 60 target bombarded by argon and xenon ions by Dudkin, V.A, Pukha, V.E, Vus, A.S, Stetsenko, A.N, Savitsky, B.A, Vovk, O.M

“…The structural and morphological features of films deposited by sputtering C 60 target with argon or xenon ions at 30° to a surface have been studied by the…”
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Structure and phase composition of sputter deposits from a C60 target bombarded by argon and xenon ions by DUDKIN, V. A, PUKHA, V. E, VUS, A. S, STETSENKO, A. N, SAVITSKY, B. A, VOVK, O. M

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