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Wyszukujesz frazę "Szymanski, T." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Structure and Magnetic Properties of Ni/Ti Multilayers
    Autorzy:
    Szymański, B.
    Stobiecki, F.
    Otto, T.
    Röll, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1953189.pdf
    Data publikacji:
    1997-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Kj
    75.70.-i
    Opis:
    We report a study of structure and magnetic properties of Ni/Ti multilayers with different modulation wavelength, 10 nm ≤ λ ≤ 40 nm, and constant sublayers thickness ratio d$\text{}_{Ni}$/d$\text{}_{Ti}$=1. Specimens were characterized with X-ray diffraction, vibrating sample magnetometer and torque meter in as-deposited state and in successive stages of isothermal annealing at 423 K. Hysteresis curves of as-deposited samples revealed the typical feature of ferromagnetic films with predominant shape anisotropy. During annealing very pronounced changes in the hysteresis loops were observed. An analysis of the loops indicates the occurrence of distinct changes in magnetic anisotropy of Ni sublayers: their effective shape anisotropy is drastically reduced due to a development of the perpendicular anisotropy and/or a modification of the microstructure. The effect can possibly be applied to achieve desirable variation of perpendicular anisotropy in multilayers which consist of Ni sublayers.
    Źródło:
    Acta Physica Polonica A; 1997, 91, 1; 233-236
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hard and Soft X-Ray Reflectivity Studies οf $(NiFe//Au//Co//Au)_{10}$ Magnetic Multilayers
    Autorzy:
    Szymański, B.
    Stobiecki, F.
    Weis, T.
    Engel, D.
    Urbaniak, M.
    Kuświk, P.
    Lengemann, D.
    Ehresmann, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810593.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cm
    75.60.-d
    75.70.-i
    Opis:
    We report on hard and soft X-ray reflectivity investigations of $(Ni_{80}Fe_{20} (2.2 nm)//Au(2.3 nm)//Co(0.8 nm)//Au(2.3 nm))_{10}$ multilayers. Specular reflectivity curves were measured with Cu $K_{α}$ radiation and circularly polarized synchrotron radiation tuned to Co $L_{3}$ and Ni $L_{3}$ absorption edges. Structural properties of the multilayers were determined from the hard X-ray reflectivity curve. Comparison of reflectivity curves taken at different photon energies shows: (i) small difference in peak positions in dependence of reflectivity versus scattering vector q, (ii) different shapes of satellite Bragg peaks, (iii) different ranges of q for appearance of the Kiessig fringes. Analysis of soft X-ray reflectivity curves taken as a function of magnetic field allows to determine magnetic properties of Co and NiFe layer specifically.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 366-368
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    He⁺ Ion Bombardment Induced Effects on Magnetic Properties of Ni-Fe/Au/Co/Au Films
    Autorzy:
    Kuświk, P.
    Szymański, B.
    Urbaniak, M.
    Dubowik, J.
    Stobiecki, F.
    Kisielewski, J.
    Tekielak, M.
    Maziewski, A.
    Weis, T.
    Ehresmann, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813489.pdf
    Data publikacji:
    2008-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.-i
    75.30.Gw
    75.50.Sc
    Opis:
    The influence of He⁺ (10 keV) ion bombardment on magnetic properties of sputter deposited $Ni_{80}Fe_{20}$/Au/Co/Au layered films was studied. The variable parameters were the thickness of the Co layer or Au spacer and the ion dose. The magnetooptical Kerr measurements were performed on samples with wedge shaped Co or Au layers. With increasing dose of helium ions the following changes in magnetic properties were observed: (i) a decrease in the Co thickness range corresponding to the perpendicular anisotropy, (ii) a decrease in the coercive field $(H_C)$, (iii) an increase in the ferromagnetic coupling between ferromagnetic layers.
    Źródło:
    Acta Physica Polonica A; 2008, 113, 2; 651-656
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and Characterisation of Fe/Ce Multilayer
    Autorzy:
    Dawczak-Dębicki, H.
    Marczyńska, A.
    Pacanowski, S.
    Szymański, B.
    Majchrzycki, Ł.
    Kowalski, W.
    Grembowski, W.
    Bilski, T.
    Smardz, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030530.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.-i
    68.55.-a
    Opis:
    Ce/Fe multilayer (ML) with constant Fe (2 nm) and Ce (4.5 nm) sublayer thicknesses was prepared onto naturally oxidised Si(100) substrate using magnetron sputtering. Chemical purity of the sublayers was revealed in-situ by X-ray photoelectron spectroscopy (XPS) measurements. The structure of the sample was studied by standard low- and high-angle X-ray diffraction (XRD). Surface morphology of the ML was examined by atomic force microscopy. Magnetic properties of the sample was studied in the temperature range between 5 and 350 K using a vibrating sample magnetometer in a magnetic field up to 9 T. The hysteresis loops were measured in field perpendicular and parallel to the substrate. Furthermore, hydrogen absorption at a pressure of about 1000 mbar was studied at room temperature (RT) in Pd covered ML using four-point resistivity measurements. The solid state amorphisation reaction have been confirmed by XRD and magnetic measurements of the Ce/Fe ML. The absence of satellite peaks in the low - angle XRD pattern revealed no artificial layered structure. The above results show that interdiffusion of cerium and iron atoms is extremely fast at RT.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 628-631
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Domains Stimulated Magnetostatic Coupling in NiFe/Au/Co/Au Multilayers Investigated by Complementary Methods
    Autorzy:
    Stobiecki, F.
    Urbaniak, M.
    Szymański, B.
    Kuświk, P.
    Schmidt, M.
    Aleksiejew, J.
    Weis, T.
    Engel, D.
    Lengemann, D.
    Ehresmann, A.
    Kopcewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810577.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.-i
    75.30.Gw
    75.60.-d
    Opis:
    The magnetic structure of $Ni_{80}Fe_{20}$/Au/Co/Au multilayers characterized by easy-plane and easy-axis perpendicular to the sample plane anisotropies for NiFe and Co, respectively, is strongly modified by magnetostatic coupling resulting from stray fields of stripe domains in the Co layers. Using complementary methods it will be shown that the magnetostatic coupling increases with decreasing Au spacer thickness, with the weakening of the easy plane anisotropy of the NiFe layers and with increasing thickness of the Co layers.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 345-347
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Tailoring of Domains in NiFe/Au/Co/Au Multilayers by He Ion Bombardment through Nanospheres
    Autorzy:
    Glapka, W.
    Kuświk, P.
    Sveklo, I.
    Urbaniak, M.
    Jóźwiak, K.
    Weis, T.
    Engel, D.
    Ehresmann, A.
    Błaszyk, M.
    Szymański, B.
    Maziewski, A.
    Stobiecki, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1810578.pdf
    Data publikacji:
    2009-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.-i
    75.60.-d
    Opis:
    Sputter deposited $(Ni_{80}Fe_{20}//Au//Co//Au)_{10}$ multilayers, characterized by alternating in-plane and perpendicular anisotropies of the NiFe and Co layers, respectively, and out-of-plane stripe (labyrinth) domain structure in the Co layers, were bombarded by $He^+$-ions (10 keV) through a mask consisting of polystyrene nanospheres with a diameter of 470 nm. The changes of multilayers magnetic properties after ion bombardment are correlated with the used mask structure.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 1; 348-351
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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