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Wyszukujesz frazę "Volobuev, V." wg kryterium: Autor


Wyświetlanie 1-10 z 10
Tytuł:
Interlayer Exchange Coupling in Semiconductor EuS-PbS Ferromagnetic Wedge Multilayers
Autorzy:
Kowalczyk, L.
Wrotek, S.
Dziawa, P.
Osinniy, V.
Szot, M.
Story, T.
Sipatov, A. Yu.
Volobuev, V. V.
Fedorov, A. G.
Powiązania:
https://bibliotekanauki.pl/articles/2046924.pdf
Data publikacji:
2006-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.20.Ck
75.30.Et
Opis:
Antiferromagnetic interlayer coupling between ferromagnetic layers of EuS via nonmagnetic PbS spacer layer was experimentally studied in EuS-PbS wedge multilayers grown on KCl (001) substrates with EuS thickness of 6 nm and PbS thickness varying in the wedges in the range 0.3-6 nm (i.e. n=1-20 monolayers). Measurements of magnetic hysteresis loops of EuS-PbS multilayers performed in the temperature range 5-30 K by superconducting (SQUID) and magneto-optical magnetometers revealed a rapid increase in saturation magnetic field in multilayers with PbS spacer thinner than about 1.5 nm. It shows a monotonic increase in interlayer coupling strength with a decreasing PbS spacer thickness, in qualitative agreement with 1/2$\text{}^{n}$ dependence predicted theoretically for semiconductor magnetic superlattices.
Źródło:
Acta Physica Polonica A; 2006, 110, 2; 225-231
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and Electron-Transport Properties of Photoresist Implanted by $Sb^{+}$ Ions
Autorzy:
Vabishchevich, N.
Brinkevich, D.
Volobuev, V.
Lukashevich, M.
Prosolovich, V.
Sidorenko, Yu.
Odzhaev, V.
Partyka, J.
Powiązania:
https://bibliotekanauki.pl/articles/1503884.pdf
Data publikacji:
2011-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
85.40.Hp
Opis:
Morphology and electron-transport properties in the photoresist-silicon structures implanted by 60 keV antimony in the fluence range 1 × $10^{15}$ ÷ 5 × $10^{16} cm^{-2}$ with the ion current density 4 μA/$cm^2$ have been investigated. Microhardness increases with the increasing fluence. Non-monotonous dependence of microhardness on the depth in the implanted structures was observed. Transition from insulating to the metallic regime of conductivity was not observed.
Źródło:
Acta Physica Polonica A; 2011, 120, 1; 46-48
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetization Studies of Antiferromagnetic Interlayer Coupling in EuS-SrS Semiconductor Multilayers
Autorzy:
Samburskaya, T.
Sipatov, A.
Volobuev, V.
Dziawa, P.
Knoff, W.
Kowalczyk, L.
Szot, M.
Story, T.
Powiązania:
https://bibliotekanauki.pl/articles/1400494.pdf
Data publikacji:
2013-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.20.Ck
75.30.Et
Opis:
Temperature and magnetic field dependence of magnetization of EuS-SrS multilayers grown epitaxially on KCl (001) substrate is experimentally studied by superconducting magnetometry technique. In these lattice-matched semiconductor heterostructures EuS layers are ferromagnetic quantum wells whereas SrS layers are nonmagnetic spacer barriers. The multilayers composed of EuS layers with thickness 3.5-5 nm and SrS layers (thickness 0.5-10 nm) exhibit ferromagnetic transition at 17 K. In the multilayers with ultrathin SrS spacers (0.5-1 nm) a nonmonotonic temperature dependence of magnetization as well as a characteristic switching in magnetic hysteresis loops is observed. These experimental findings are explained considering antiferromagnetic interlayer coupling between ferromagnetic EuS layers via nonmagnetic SrS spacers. The strength of this coupling is determined based on model magnetization calculations.
Źródło:
Acta Physica Polonica A; 2013, 124, 1; 133-136
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of EuS-SrS Semiconductor Multilayer Structures
Autorzy:
Szot, M.
Kowalczyk, L.
Deptuła, P.
Domukhovski, V.
Osinniy, V.
Smajek, E.
Szczerbakow, A.
Sipatov, A. Yu.
Volobuev, V. V.
Fedorov, A. G.
Story, T.
Powiązania:
https://bibliotekanauki.pl/articles/2047716.pdf
Data publikacji:
2007-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.20.Ck
75.30.Et
Opis:
Magnetic and structural properties of EuS-SrS semiconductor multilayers were studied by SQUID and magneto-optical Kerr effect magnetometry techniques and by X-ray diffraction method. The multilayers composed of monocrystalline, lattice matched ferromagnetic EuS layers (thickness 35-50Å) and nonmagnetic SrS spacer layers (thickness 45-100Å) were grown epitaxially on KCl (001) substrates with PbS buffer layer. Ferromagnetic transition in EuS-SrS multilayers was found at the Curie temperature T$\text{}_{c}$=17 K. The multilayers exhibit only weak in-plane magnetic anisotropy with [110] easy magnetization axis. Coercive field of EuS-SrS multilayers shows a linear increase with decreasing temperature. Magneto-optical mapping of magnetic hysteresis loops of the multilayers revealed good spatial homogeneity of their magnetic properties.
Źródło:
Acta Physica Polonica A; 2007, 112, 2; 419-424
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Properties of EuS/Co Multilayers on KCl and BaF₂ Substrates
Autorzy:
Szot, M.
Kowalczyk, L.
Story, T.
Domukhovski, V.
Knoff, W.
Gas, K.
Volobuev, V.
Sipatov, A.
Fedorov, A.
Powiązania:
https://bibliotekanauki.pl/articles/1811998.pdf
Data publikacji:
2008-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.Et
75.75.+a
Opis:
Magnetic and structural properties of EuS/Co multilayers were studied by magnetic optical Kerr effect and SQUID magnetometry techniques and by X-ray diffraction method. The multilayers containing monocrystalline, ferromagnetic EuS layer (thickness 35-55 Å) and metallic Co layer (thickness 40-250 Å), were grown on KCl (001) and BaF₂ (111) substrates using high vacuum deposition technique employing electron guns for Co and EuS. All investigated EuS/Co multilayers exhibit ferromagnetic properties at room temperature due to Co layer with the ferromagnetic transition in EuS layer clearly marked upon cooling below 16 K. In EuS/Co/EuS trilayers grown on KCl substrate the antiferromagnetic alignment of magnetization vectors of Co and EuS layers was experimentally observed as a characteristic low field plateau on magnetization hysteresis loops and a decrease in multilayer magnetization below 16 K. In Co/EuS bilayers the characteristic temperature dependent shift of magnetization loops was found due to exchange bias effect attributed to the CoO/Co interface formed by the oxidation of the top Co layer.
Źródło:
Acta Physica Polonica A; 2008, 114, 5; 1397-1402
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Photoluminescence Study in PbS-EuS Superlattices
Autorzy:
Kowalczyk, L.
Sadowski, J.
Gałązka, R. R.
Stachow-Wójcik, A.
Sipatov, A. Yu.
Volobuev, V. V.
Smirnov, V. A.
Dugaev, V. K.
Powiązania:
https://bibliotekanauki.pl/articles/1991612.pdf
Data publikacji:
1998-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Pp
Opis:
Investigations of the photoluminescence of PbS-EuS superlattices deposited on (111)BaF$\text{}_{2}$ substrates are presented. Quantum-size and deformation effects in photoluminescence spectra are observed. The strain-induced gap shift and valence-band offset is determined from experimental results. A strong stimulated photoluminescence with relatively low threshold was observed. It was found that the photocarriers generated in EuS barrier strongly affect the population of PbS subbands.
Źródło:
Acta Physica Polonica A; 1998, 94, 3; 397-400
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic and Structural Properties of EuS-PbS Multilayers Grown on n-PbS (100) Substrates
Autorzy:
Chernyshova, M.
Łusakowska, E.
Domukhovski, V.
Grasza, K.
Szczerbakow, A.
Wrotek, S.
Kowalczyk, L.
Story, T.
Smits, C. J. P.
Swagten, H. J. M.
De Jonge, W. J. M.
Palosz, W.
Sipatov, A. Yu.
Volobuev, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/2035589.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.20.Ck
75.30.Et
Opis:
Magnetic properties of semiconductor EuS(t)-PbS(d)-EuS(t) ferromagnetic trilayers (t=30÷300Å and d=7.5÷70Å) grown on n-type monocrystalline PbS (100) substrate were studied by SQUID magnetometry and ferromagnetic resonance technique yielding, in particular, the dependence of the ferromagnetic Curie temperature on the thickness of the EuS layer. Structural parameters of layers were examined by X-ray powder diffraction analysis. A high structural quality of the substrate and the multilayer was verified by the measurements of the X-ray rocking curve width indicating the values of the order of 100 arcsec and by atomic force microscopy revealing the presence on the cleft PbS surface regions practically flat in the atomic scale over the area of 1×0.1μm$\text{}^{2}$.
Źródło:
Acta Physica Polonica A; 2002, 102, 4-5; 609-615
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of powerful pulses of hydrogen plasma upon materials in PF-1000 device
Autorzy:
Pimenov, V.
Gribkov, V.
Dubrovsky, A.
Mezzetti, F.
Scholz, M.
Ugaste, U.
Dyomina, E.
Ivanov, L.
Maslyaev, S.
Miklaszewski, R.
Borowiecki, M.
De Chiara, P.
Pizzo, L.
Szydlowski, A.
Volobuev, I. V.
Powiązania:
https://bibliotekanauki.pl/articles/147096.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
dense plasma focus (DPF)
ion beam
irradiation
plasma jet
surface damage
test specimen
Opis:
The results of experimental investigations of powerful hydrogen plasma jets and fast ion beams interaction with various materials (austenitic chromium-manganese steels, pure vanadium, tungsten, graphite, copper, and their alloys: Cu-4 mass% Ni and Cu-10 mass% Ga) are presented. The materials were placed on the discharge axis of the PF-1000 device and irradiated with fluxes of fast ions (of energy in the range from tens keV up to several MeV) and with plasma streams (of power flux density q~(108 109) W/cm2). It was found that the fast ions and plasma streams caused different damages to the aforementioned materials. A diverse character of the damages to the individual investigated material was revealed. Some peculiarities of the process as well as the correlation between the surface density of the "macroscopic" structural defects (blisters and craters) and the fluence of the fast ions implanted in the specimen are discussed.
Źródło:
Nukleonika; 2002, 47, 4; 155-162
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of a powerful energy flow effect on materials in PF-1000 installation
Autorzy:
Borowiecki, M.
De Chiara, P.
Dubrovsky, A. V.
Dyomina, E. V.
Gribkov, V. A.
Ivanov, L. I.
Maslyaev, S. A.
Mezzetti, F.
Miklaszewski, R.
Pimenov, V. N.
Pizzo, L.
Scholz, M.
Szydlowski, A.
Ugaste, Y. E.
Volobuev, I. V.
Powiązania:
https://bibliotekanauki.pl/articles/148824.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
dense plasma focus (DPF)
irradiation
plasma jet
shock wave
test specimen
Opis:
The report describes some of the results obtained in an experimental study of the impact of a powerful plasma stream and a fast ion beam generated in a PF-1000 device on different materials perspective for the use in radiation loaded parts of pulsed plasma installations. Investigations were done during and after the interaction processes. It is shown that in case of irradiation of samples only by high power flux density plasma streams the effect of detachment still preserved. At the same time a low power flux density high-energy ion beam plays an important role in the process of saturation of the irradiated material by hydrogen.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 117-122
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DPF device application in the material characterization
Autorzy:
Dubrovsky, A.
Silin, P.
Gribkov, V.
Volobuev, I.
Powiązania:
https://bibliotekanauki.pl/articles/146768.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
dense plasma focus (DPF)
material sciences
small DPF chamber
X-rays
Opis:
The ability of a dense plasma focus (DPF) installation, to serve as a unique powerful hard X-ray and neutron pulse generator, is discussed. A principle of the dynamic detection of defects, based on a small-scale DPF device, is described. The results of a dynamic defect detection experiment are presented. Different aspects of the application and adaptation of a small DPF chamber for the material science, are discussed.
Źródło:
Nukleonika; 2000, 45, 3; 185-187
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

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