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Wyszukujesz frazę "Mazurek, M. M." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Structure and Mössbauer Spectroscopy Studies of Multiferroic Mechanically Activated Aurivillius Compounds
    Autorzy:
    Mazurek, M.
    Oleszak, D.
    Pikula, T.
    Karolus, M.
    Jartych, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1382196.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.85.+t
    81.20.-n
    61.05.cp
    76.80.+y
    Opis:
    X-ray diffraction and $\text{}^{57}Fe$ Mössbauer spectroscopy were applied as complementary methods to investigate the structure and hyperfine interactions of the Aurivillius compounds prepared by mechanical activation and subsequent heat treatment. Preliminary milling of precursors enhanced the diffusion process and pure Aurivillius compounds were obtained at lower temperature as compared with conventional solid-state sintering technology (lower at least by 50 K). All the investigated Aurivillius compounds are paramagnetic materials at room temperature.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4; 975-978
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mössbauer Study of Mechanosynthesized and Thermally Treated Co-Fe-Ni Alloys
    Autorzy:
    Pikula, T.
    Oleszak, D.
    Pękała, M.
    Mazurek, M.
    Żurawicz, J.
    Jartych, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811586.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Ev
    75.50.Kj
    76.80.+y
    75.60.Ej
    Opis:
    Mechanical alloying was used to prepare $Co_{40}Fe_{60}$, $Co_{60}Fe_{35}Ni_{5}$, $Co_{40}Fe_{45}Ni_{15}$, and $Co_{40}Fe_{35}Ni_{25}$ alloys from the elemental powders. As X-ray diffraction studies proved the final products of milling were the solid solutions with bcc or fcc lattice and the average grain size between 20 and 50 nm. After heating of the alloys up to 993 K, the mixtures of two solid solutions with bcc and fcc lattices were formed in the case of Co-Fe-Ni alloys. Thermal treatment did not influence the type of the lattice of $Co_{40}Fe_{60}$ alloy. The Mössbauer spectroscopy revealed hyperfine magnetic field distribution ranged from 33 to 38 T for $Co_{40}Fe_{60}$ alloy and from 30 to 37 T for Co-Fe-Ni alloys. In the case of two-phase alloys, distributions were decomposed into two simple Gaussian functions using the numerical fitting. Magnetic measurements allowed to determine the effective magnetic moments and the Curie temperatures of the obtained alloys.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6; 1545-1553
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Hyperfine Interactions in Aurivillius $Bi_{9}Ti_{3}Fe_{5}O_{27}$ Conventionally Sintered Compound
    Autorzy:
    Mazurek, M.
    Lisińska-Czekaj, A.
    Surowiec, Z.
    Jartych, E.
    Czekaj, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506653.pdf
    Data publikacji:
    2011-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Je
    81.20.Ev
    31.30.Gs
    76.80.+y
    Opis:
    The structure and hyperfine interactions in the $Bi_{9}Ti_{3}Fe_{5}O_{27}$ Aurivillius compound were studied using X-ray diffraction and Mössbauer spectroscopy. Samples were prepared by the conventional solid-state sintering method at various temperatures. An X-ray diffraction analysis proved that the sintered compounds formed single phases at temperature above 993 K. Mössbauer measurements have been carried out at room and liquid nitrogen temperatures. Room-temperature Mössbauer spectrum of the $Bi_{9}Ti_{3}Fe_{5}O_{27}$ compound confirmed its paramagnetic properties. However, low temperature measurements revealed the additional paramagnetic phase besides the antiferromagnetic one.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 1; 72-74
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fourier Transform Near Infrared Raman Spectroscopy in Studies on Connective Tissue
    Autorzy:
    Połomska, M.
    Kubisz, L.
    Kalawski, R.
    Oszkinis, G.
    Filipiak, R.
    Mazurek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537548.pdf
    Data publikacji:
    2010-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.30.-j
    78.30.Jw
    61.80.Ed
    61.82.Pv
    81.05.-t
    87.-g
    87.93.-j
    87.64.K-
    Opis:
    Studies of tissue such as bones and veins often are carried out by means of microscopic and ultrasonographic methods. Therefore studies of changes caused by pathological or physical factors often are limited to morphological level. Application of Raman spectroscopy permits to associate morphological changes and molecular changes. The paper presents preliminary studies of temperature and ionizing radiation effects on Raman spectra of bone and collagen. Furthermore, effects of pathological factors on Raman spectra of human veins had been studied. It was noticed that heating of bone collagen up to 110°C gives the reversible changes in spectra. In the case of γ-irradiation, any effects were observed up to the dose of 1 MGy on mineral component of bone, whereas the influence on collagen was observed for doses higher than 100 kGy. The Raman spectra of varicose vs. normal veins permit to conclude some important changes observed for veins from chronic venous insufficiency patients.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 1; 136-140
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical, Structural, and Electrical Properties of Aromatic Triphenylamine-Based Poly(azomethine)s in Thin Layers
    Autorzy:
    Palewicz, M.
    Iwan, A.
    Sikora, A.
    Doskocz, J.
    Strek, W.
    Sek, D.
    Mazurek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490096.pdf
    Data publikacji:
    2012-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    77.84.Jd
    73.61.Ph
    78.66.Qn
    Opis:
    Spectroscopic and photophysical properties of the poly(azomethine)s with triphenylamine moieties were investigated by UV-vis, X-ray diffraction and atomic force microscopy methods. Current-voltage measurements were performed on ITO/polymer/$Alq_3$/Al, ITO/PEDOT/polymer:MWCNT/Al and ITO/polymer:MWCNT/Al devices. Multiwall carbon nanotubes were blended with polymer in the ratio 1:1. The lowest optical band gap value at 2.33 eV was detected. Moreover, an absorption coefficient α was calculated from transmission and reflectivity measurements. In this paper, we presented photophysical and structural properties of the poly(azomethine)s in solid state of great interest for the emerging field of molecular electronics and for their uses as active layers in (opto)electronic devices such as solar cells.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 2; 439-444
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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