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Wyszukujesz frazę "Borysiewicz, A." wg kryterium: Autor

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    Wyświetlanie 1-12 z 12
    Tytuł:
    ZnO Thin Films Deposited on Sapphire by High Vacuum High Temperature Sputtering
    Autorzy:
    Borysiewicz, M. A.
    Pasternak, I.
    Dynowska, E.
    Jakieła, R.
    Kolkovski, V.
    Dużyńska, A.
    Kamińska, E.
    Piotrowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048109.pdf
    Data publikacji:
    2011-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Dz
    81.15.Cd
    61.05.cp
    68.37.Hk
    68.37.Ps
    68.49.Sf
    78.55.Et
    Opis:
    ZnO (0001) layers on sapphire (0001) substrates were fabricated by means of high temperature high vacuum magnetron sputtering. The layers were deposited onto a thin MgO buffer and a low temperature ZnO nucleation layer, which is a technology commonly used in MBE ZnO growth. This paper reports on using this technology in the sputtering regime.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 5; 686-688
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gas Sensors Based on ZnO Structures
    Autorzy:
    Struk, P.
    Pustelny, T.
    Gołaszewska, K.
    Borysiewicz, M.
    Piotrowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399403.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.25.Hz
    42.25.-p
    42.82.Et
    68.35.Ct
    Opis:
    The paper presents the results of investigations concerning sensor structures based on porous layers of zinc oxide (ZnO) sensitive to a selected gaseous environment. The investigations comprised analyses of the influence of the gaseous environment on the optical properties of a sensor structure, in particularly on the change of the spectral characteristics of optical transmission within the range of ultraviolet light and in the visible range. These presented investigations were carried out in such a gaseous environment as nitrogen dioxide $NO_2$ in synthetic air.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 567-569
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High Quality Gate Insulator/GaN Interface for Enhancement-Mode Field Effect Transistor
    Autorzy:
    Taube, A.
    Kruszka, R.
    Borysiewicz, M.
    Gierałtowska, S.
    Kamińska, E.
    Piotrowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492515.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    77.55.dj
    77.22.Ch
    73.40.Qv
    81.15.Gh
    81.15.Cd
    Opis:
    The capacitance-voltage measurements were applied for characterization of the semiconductor/dielectric interface of GaN MOS capacitors with $SiO_2$ and $HfO_2//SiO_2$ gate stacks. From the Terman method low density of interface traps $(D_{it} \approx 10^{11} eV^{-1} cm^{-2})$ at $SiO_2//GaN$ interface was calculated for as-deposited samples. Samples with $HfO_2//SiO_2$ gate stacks have higher density of interface traps as well as higher density of mobile charge and effective charge in the dielectric layers. High quality of $SiO_2//GaN$ interface shows applicability of $SiO_2$ as a gate dielectric in GaN MOSFET transistors.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6A; A-022-A-024
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Porous Zn Growth Mechanism during Zn Reactive Sputter Deposition
    Autorzy:
    Borysiewicz, M.
    Wojciechowski, T.
    Dynowska, E.
    Kamińska, E.
    Piotrowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1198573.pdf
    Data publikacji:
    2014-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.70.-m
    81.15.Cd
    77.55.hf
    81.10.Pq
    52.27.Cm
    Opis:
    Ar-O-Zn plasma discharges created during DC reactive magnetron sputtering of a Zn target and RF reactive magnetron sputtering of a ceramic ZnO target were investigated and compared by means of the Langmuir probe measurements in order to determine the mechanism of growth of porous Zn films during DC-mode Zn reactive sputtering. The power supplied to the magnetrons during the sputtering was kept at 125 W and the plasma was characterised as a function of oxygen content in the sputtering gas mixture, ranging from 0 to 60% for two gas pressures related to porous Zn film deposition, namely 3 mTorr and 5 mTorr. Based on the correlation of plasma properties measurements with scanning electron microscope imaging and X-ray diffraction of the films deposited under selected conditions it was found that the growth of porous, polycrystalline Zn films was governed by high electron density in the plasma combined with a high electron temperature and an increased energy of the ions impinging on the substrate.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 5; 1144-1148
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ti-Al-N MAX Phase a Candidate for Ohmic Contacts to n-GaN
    Autorzy:
    Borysiewicz, M.
    Kamińska, E.
    Piotrowska, A.
    Pasternak, I.
    Jakieła, R.
    Dynowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811915.pdf
    Data publikacji:
    2008-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    68.49.Sf
    68.55.ag
    81.40.Ef
    Opis:
    Fabrication of a Ti₂AlN MAX phase for contact applications to GaN-based devices is reported. Sample characterisation was done by means of X-ray diffraction and secondary ion mass spectroscopy. Successful Ti₂AlN monocrystalline growth was observed on GaN and Al₂O₃ substrates by annealing sputter-deposited Ti, Al and TiN layers in Ar flow at 600°C. The phase was not seen to grow when the layers were deposited on Si (111) or when the first layer on the substrate was TiN. N-type GaN samples with Ti₂AlN layers showed ohmic behaviour with contact resistivities in the range 10¯⁴ Ωcm².
    Źródło:
    Acta Physica Polonica A; 2008, 114, 5; 1061-1066
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observation of Thermally-Activated Electron Traps in GaAs/AlAs/GaAs Heterostructures in Low-Frequency Noise Measurements
    Autorzy:
    Przybytek, J.
    Stankiewicz, R.
    Gryglas-Borysiewicz, M.
    Baj, M.
    Cavanna, A.
    Faini, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048142.pdf
    Data publikacji:
    2011-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.50.Td
    73.40.Gk
    Opis:
    During our investigations of tunneling process in thin 7 nm thick GaAs/AlAs/GaAs vertical single-barrier tunneling structure with Si δ-doping inside the barrier we have observed fluctuations of the tunneling current which exhibited large Lorentzian noise with intensity depending on biasing voltage. We have shown that Lorentzian noise originates from multilevel random telegraph noise of the small number of fluctuators which influence the tunneling process. Time-domain analysis of the current noise measured for temperatures between 4.2 K and 50 K enabled to determine the thermal activation energies of these fluctuators lying between 0.8 and 3 meV.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 5; 723-725
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Epitaxial Strain on Magnetic Anisotropy in (Ga,Mn)As
    Autorzy:
    Juszyński, P.
    Wasik, D.
    Gryglas-Borysiewicz, M.
    Przybytek, J.
    Szczytko, J.
    Twardowski, A.
    Sadowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1403622.pdf
    Data publikacji:
    2012-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Pp
    75.47.-m
    Opis:
    Two (Ga,Mn)As samples having different magnetic anisotropy (one with in-plane easy axis and another one with out-of-plane easy axis) were studied by means of magnetotransport experiments. Anisotropy field B_{A} was determined for both samples as a function of temperature. For the sample having in-plane easy axis, an inversion of the direction of planar Hall effect hysteresis was observed upon increase of temperature. This result was simulated using the Stoner-Wohlfarth model.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 6; 1004-1006
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transport in GaAs/AlAs/GaAs [111] Tunnel Junctions
    Autorzy:
    Lewińska, S.
    Gryglas-Borysiewicz, M.
    Przybytek, J.
    Baj, M.
    Jouault, B.
    Gennser, U.
    Ouerghi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2047930.pdf
    Data publikacji:
    2011-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.61.-r
    71.20.Nr
    73.23.Hk
    73.63.Hs
    72.10.Di
    85.30.Mn
    73.40.Gk
    Opis:
    Resonant tunneling in single-barrier GaAs/AlAs/GaAs junctions grown in [111] direction was studied for samples with different concentration of silicon δ-doping in AlAs. In the I(V) characteristics, measured at 4 K, two kinds of peaks were observed: related to resonant tunneling via donors states in the barrier, and through X-minimum quantum well subbands. The results are compared to those previously obtained for analogous samples grown along [001] direction. The investigations reveal different symmetry of donor states in both cases.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 5; 606-608
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zinc Oxide Semiconductor for Photonics Structures Applications
    Autorzy:
    Struk, P.
    Pustelny, T.
    Pustelny, B.
    Gołaszewska, K.
    Kamińska, E.
    Piotrowska, A.
    Borysiewicz, M.
    Ekielski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506857.pdf
    Data publikacji:
    2010-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.25.Hz
    42.70.-a
    42.82.-m
    68.35.Ct
    Opis:
    The paper presents investigations concerning the analysis of photonic structures with grating couplers. In the paper basic theoretically information on photonic structures with grating couplers is presented. The results of numerical investigations on photonic structures with grating couplers are discussed, too. Investigations show an essential influence of the geometrical parameters of grating couplers on the effectiveness of the input and output of optic power into and out of this photonic structure. In the paper the selected results of experimental realizations of photonic structures with grating couplers based on zinc oxide ZnO are presented.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 6; 1242-1245
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of ZnO/GaN Heterostructure to Ion Irradiation
    Autorzy:
    Barcz, A.
    Pągowska, K.
    Kozubal, M.
    Guziewicz, E.
    Borysiewicz, M.
    Dyczewski, J.
    Jakieła, R.
    Ratajczak, J.
    Snigurenko, D.
    Dynowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402192.pdf
    Data publikacji:
    2015-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.82.Fk
    61.85.+p
    68.35.Dv
    Opis:
    In this paper we report on the analysis of Al⁺-implanted ZnO/GaN bilayers in search for the damage production mechanism and possible ion mixing. 100 nm or 200 nm thick ZnO epitaxial layers were grown on GaN substrates by either sputter deposition or atomic layer deposition technique followed by adequate annealing. Ion irradiations of ZnO/GaN were carried out at room temperature using 200 keV Al⁺ ions with fluences of 2×10¹⁵ and 10¹⁶ at./cm². Unprocessed and irradiated samples were characterized by the Rutherford backscattering spectrometry in channeling geometry (RBS\c), X-ray diffraction and transmission electron microscopy. Additionally, secondary ion mass spectrometry was employed for the aforementioned samples as well as for the implanted samples subjected to further annealing. It was found that the damage distributions in ZnO/GaN differ considerably from the corresponding defect profiles in the bulk ZnO and GaN crystals, most probably due to an additional strain originating from the lattice mismatch. Amount of intermixing appears to be relatively small; apparently, efficient recombination prevents foreign atoms to relocate to large distances.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 5; 832-835
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Capability of Semiconducting NiO Films in Gamma Radiation Dosimetry
    Autorzy:
    Guziewicz, M.
    Jung, W.
    Grochowski, J.
    Borysiewicz, M.
    Golaszewska, K.
    Kruszka, R.
    Baranska, A.
    Piotrowska, A.
    Witkowski, B.
    Domagala, J.
    Gryzinski, M.
    Tyminska, K.
    Stonert, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492706.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.61.Jc
    29.40.-n
    87.53.Bn
    Opis:
    Electrical properties of RF magnetron sputtered p-NiO films were characterized after fabrication and after gamma irradiations using $\text{}^{137}Cs$ and $\text{}^{60}Co$ sources. Electrical parameters are obtained from the Hall measurements, impedance spectroscopy and C-V measurement of n-Si/p-NiO junction diodes. The results show that resistivity of the NiO film is gradually increased following after sequential irradiation processes because of the decrease in holes' concentration. Hole concentration of a NiO film decreases from the original value of $4.36 \times 10^{16} cm^{-3}$ to $2.86 \times 10^{16} cm^{-3}$ after $\text{}^{137}Cs γ$ irradiation with doses of 10 Gy. In the case of γ irradiation from $\text{}^{60}Co$ source, hole concentration of the film decreases from $6.3 \times 10^{16}//cm^3$ to $4.1 \times 10^{16}//cm^3$ and to $2.9 \times 10^{16}//cm^3$ after successive expositions with a dose of 20 Gy.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6A; A-069-A-072
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Planar Optical Waveguides for Application in Optoelectronic Gas Sensors
    Autorzy:
    Golaszewska, K.
    Kamińska, E.
    Pustelny, T.
    Struk, P.
    Piotrowski, T.
    Piotrowska, A.
    Ekielski, M.
    Kruszka, R.
    Wzorek, M.
    Borysiewicz, M.
    Pasternak, I.
    Gut, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811559.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.82.Et
    07.07.Df
    42.79.Pw
    81.15.-z
    Opis:
    In the paper, the results of technological investigations on planar optical waveguides based on high band gap oxide semiconductors were presented. Investigations concerned the technologies of depositing very thin layers of: zinc oxide ZnO, titanium dioxide $TiO_2$ and tin dioxide $SnO_2$ on substrates of quartz glass plates. There were investigated both morphological structures of the produced layers and their optical properties. The paper also presents investigations on the technology of input-output light systems in the Bragg grating structures.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6A; A-223-A-230
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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