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    Wyświetlanie 1-7 z 7
    Tytuł:
    Characterized Microstructure and Electrical Properties of Hydrogenated Nanocrystalline Silicon Films by Raman and Electrical Conductivity Spectra
    Autorzy:
    Xiao-Yong, Gao
    Jian-Tao, Zhao
    Yu-Fen, Liu
    Qing-Geng, Lin
    Yong-Sheng, Chen
    Jin-Hua, Gu
    Shi-E, Yang
    Jing-Xiao, Lu
    Powiązania:
    https://bibliotekanauki.pl/articles/1808127.pdf
    Data publikacji:
    2009-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.23.Cq
    73.61.-r
    Opis:
    Microstructure and electrical properties of hydrogenated nanocrystalline silicon (nc-Si:H) film deposited on glass substrate at low temperature were characterized by average grain size, crystallinity, and dark electrical conductivity data obtained from the Raman and electrical conductivity spectroscopy, respectively. The average grain size, crystallinity and electrical conductivity have a similar change with substrate temperature. A threshold substrate temperature determined by silane concentration appears in their corresponding spectroscopy vs. substrate temperature. The dependence of crystallinity, average grain size and electrical conductivity on substrate temperature were accounted for by surface diffusion model and heterojunction quantum dot model, respectively.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 3; 738-741
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Single-Photon Router in Quantum Fluctuation of Field
    Autorzy:
    Liu, Li-Wei
    Shi, Yu-Qing
    Qiong, Chen
    Powiązania:
    https://bibliotekanauki.pl/articles/1032595.pdf
    Data publikacji:
    2017-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    single-photon quantum router
    Bose-Einstein condensate
    cavity optomechanical
    Opis:
    We investigate a single-photon quantum router in quantum fluctuation of fields. The optomechanical system composed of a cigar-shaped Bose-Einstein condensate trapped in an ultrahigh-finesse Fabry-Pérot cavity. We show how an analog of electromagnetically induced transparency in an optomechanical system can be used to produce a switch for a quantum fluctuation field using very low pumping field strength. The numerical results show that the output photon is completely different by turning the pump off and turning the pump on. We also show that the quantum noise sources are very small. This optomechanical system can serve as a single-photon quantum router.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 4; 1358-1362
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Motion Center in Quantum Wave Packet Dynamics
    Autorzy:
    Liu, Qian
    Yu, Yanxia
    Pan, Hui
    Wang, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398933.pdf
    Data publikacji:
    2015-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.70.Di
    73.43.-f
    03.65.Ta
    03.65.Sq
    Opis:
    We seek for an oscillating center solution of the wave function satisfying the Schrödinger equation for a nonrelativistic charge particle in an arbitrary external field, where the oscillating center of physical system is a motion governing by a guidance formula of the classical mechanics and at the same time, the physical system obeys the rule of quantum mechanics. In terms of our approach, one enables to know how quantum process may actually come about. The results are applied to analyze the Landau level. We explain successfully that the orbit of oscillator center for the Landau level is circle.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 3; 761-766
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Magnetic Properties of Magnetron-Sputtered [Fe/Pt]ₙ Multilayer Films
    Autorzy:
    Zhang, Y.
    Yu, W.
    Chen, F.
    Liu, M.
    Li, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401879.pdf
    Data publikacji:
    2015-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.Jk
    75.50.Ss
    Opis:
    [Fe/Pt]ₙ multilayer films were prepared on thermally oxidized Si (100) substrates at 300°C using dc magnetron sputtering and annealed for different temperature ranging from 350 to 500°C. It is found that the as-deposited [Fe/Pt]ₙ multilayer films exhibit well-resolved periodic structures and low roughness of interface. The ordering degree of the annealed films decreases and their perpendicular magnetic anisotropy deteriorates with increasing the period number. Fe/Pt bilayer film annealed at 350°C shows (001) orientation and hard magnetic characteristic, the coercivity and perpendicular anisotropy enhance with increase of annealing temperature. In addition, the hard and soft magnetic phases are not fully magnetically coupled in the Fe/Pt film annealed at higher temperature.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 3; 326-330
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of High Co Addition on the Properties of $Fe_{79}Zr_{9}B_{12}$ and $Fe_{76}Zr_{9}B_{15}$ Alloys
    Autorzy:
    Yu, W.
    Long, D.
    Liu, Y.
    Sun, Y.
    Hua, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401884.pdf
    Data publikacji:
    2015-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    65.60.+a
    61.43.Dq
    Opis:
    Thermal properties, microstructure and magnetic properties of $Fe_{79}Zr_{9}B_{12},$ $Fe_{76}Zr_{9}B_{15},$ $Fe_{39.5}Co_{39.5}Zr_{9}B_{12}$ and $Fe_{38}Co_{38}Zr_{9}B_{15}$ alloys were investigated by differential thermal analysis, X-ray diffraction and vibrating sample magnetometer. High Co addition has a significant impact on the properties of alloys. High Co addition increases the main crystallization peak temperature and the crystallization activation energy. Moreover, high Co addition changes the crystallization products and influences the crystallization processes of $Fe_{79}Zr_{9}B_{12}$ and $Fe_{76}Zr_{9}B_{15}$ alloys. The specific saturation magnetization $(M_{s})$ increases and coercivity $(H_{c})$ decreases by high Co additions.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 3; 340-342
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Behavior and Crystallization of $Fe_{81 - x}Co_{x}Zr_7Nb_2B_{10}$ (x = 2, 4, 6) Alloys
    Autorzy:
    Yu, W.
    Sun, Y.
    Liu, L.
    Dong, L.
    Hua, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492773.pdf
    Data publikacji:
    2011-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    65.60.+a
    61.43.Dq
    Opis:
    Thermal behavior and microstructure of $Fe_{81 - x}Co_{x}Zr_7Nb_2B_{10}$ (x = 2, 4, 6) alloys were investigated by differential thermal analysis and X-ray diffraction. Both the supercooled liguid region Δ $T_{x}$ and the first crystallization peak temperature $T_{p1}$ are the lowest and the span Δ $T_{p}$ between $T_{p1}$ and $T_{p2}$ is the highest when 4 at.% Fe is substituted by Co. The crystallization activation energy $E_{p1}$ for $Fe_{75}Co_6Zr_7Nb_2B_{10}$ alloy is the minimum for the heating rates ν = 5-20 K/min. $E_{p1}$ for $Fe_{77}Co_4Zr_7Nb_2B_{10}$ alloy is the minimum for the heating rates ν = 20 - 50 K/min. The crystallization processes of $Fe_{81 - x}Co_{x}Zr_7Nb_2B_{10}$ (x = 2, 4, 6) amorphous alloys are similar on the whole, which is as follows: amorphous → amorphous + α-Fe(Co) → α-Fe(Co) + $Fe_3Zr$ + $Fe_2Nb_{0.4}Zr_{0.6}$.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 6; 1034-1036
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The elastic anisotropic and thermodynamic properties of I4mm-B₃C
    Autorzy:
    Fan, Qingyang
    Wei, Qun
    Chai, Changchun
    Yang, Yintang
    Yu, Xinhai
    Liu, Yang
    Zheng, Junping
    Zhou, Peikun
    Zhang, Dongyun
    Powiązania:
    https://bibliotekanauki.pl/articles/1075538.pdf
    Data publikacji:
    2016-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.15.Mb
    65.40.De
    62.20.de
    Opis:
    The structural, elastic anisotropy and thermodynamic properties of the I4mm-B₃C are investigated using first-principles calculations and the quasi-harmonic Debye model. The calculated elastic anisotropic suggest that I4mm-B₃C is elastically anisotropic with its Poisson ratio, shear modulus, the Young modulus, the universal anisotropic index, shear anisotropic factors, and the percentage of elastic anisotropy for bulk modulus and shear modulus. The quasi-harmonic Debye model, using a set of total energy versus molar volume obtained with the first-principles calculations, is applied to the study of the thermal and vibrational effects. The thermal expansions, heat capacities, the Grüneisen parameters and the Debye temperatures dependence on the temperature and pressure are obtained in the whole pressure range from 0 to 90 GPa and temperature range from 0 to 2000 K.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 1; 103-107
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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