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    Wyświetlanie 1-4 z 4
    Tytuł:
    Influence of Co Doping on Induced Anisotropy and Domain Structure in Magnetic Field Annealed $(Fe_{1-x}Co_x)_{79}Mo_8Cu_1B_{12}$
    Autorzy:
    Kunca, B.
    Marcin, J.
    Švec, P.
    Kováč, J.
    Švec Sr., P.
    Škorvánek, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398273.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Gw
    75.50.Tt
    75.60.Ch
    75.60.Nt
    Opis:
    The effect of heat treatment in applied magnetic field on the induced anisotropy and domain structure of $(Fe_{1-x}Co_x)_{79} Mo_8 Cu_1 B_{12}$ (x=0, 0.2, 0.5) nanocrystalline alloy system was investigated. A heat treatment of Co-doped samples under the application of longitudinal magnetic field resulted in squared hysteresis loops characterized by very low coercive field values. Sheared loops with tunable slope and good field linearity were obtained after annealing in transverse magnetic field. Corresponding domain structure showed uniform character, oriented in the direction parallel or perpendicular to the ribbon axis after longitudinal or transverse magnetic field annealing, respectively. No effect of magnetic field annealing was found in Co-free sample. Correlations between Co-doping, the Curie temperature, and soft magnetic properties after magnetic field annealing are discussed.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 759-761
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetoimpedance Effect in Field Annealed $(FeNi)_{78}Nb_{7}B_{15}$ Amorphous and Nanocrystalline Bilayer Ribbons
    Autorzy:
    Varga, M.
    Marcin, J.
    Capik, M.
    Janičkovič, D.
    Švec, P.
    Škorvánek, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1367440.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Kj
    75.50.Tt
    75.60.Nt
    43.58.Bh
    Opis:
    The influence of the magnetic field annealing on the magnetoimpedance effect has been investigated in rapidly quenched $(Fe_{0.5}Ni_{0.5})_{78}Nb_{7}B_{15}$ monolayer and bilayer thin ribbons. The highest impedance ratio value $(ΔZ//Z)_{max}$=72% and the maximum field sensitivity $η_{max}$=12 %/Oe was obtained in the bilayer ribbon, annealed under longitudinal magnetic field at 773 K that exhibited nanocrystalline structure. The higher values of $(ΔZ//Z)_{max}$ in bilayer ribbons, as compared to their monolayer counterparts, are attributed to the increased ratio of their thickness to the penetration depth.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 122-123
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Temperature on Magnetization Processes in Amorphous Rapidly Solidified FeSiB/CoSiB Bilayer Ribbons
    Autorzy:
    Capik, M.
    Švec, P.
    Marcin, J.
    Kováč, J.
    Sopko, M.
    Janičkovič, D.
    Škorvánek, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1200803.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Kj
    75.60.Ej
    75.80.+q
    Opis:
    Amorphous bilayers consisting of Fe-Si-B and Co-Si-B layers have been prepared by planar flow casting from a single crucible using a double-nozzle technique. Temperature dependencies of magnetization and hysteresis loops have been investigated in a wide temperature range. At room temperature, the effects of interlayer stresses, induced in material due to different thermal expansion coefficients of two mechanically interconnected soft magnetic layers, resulted in rounded hysteresis loops with flattened central part, indicating a dominant role of magnetization rotational processes. With an increase of measurement temperature, the interlayer stresses are relieved and the hysteresis loops became more squared.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 120-121
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and Properties of Soft-Magnetic Amorphous Bilayer Ribbons
    Autorzy:
    Švec, P.
    Mat'ko, I.
    Marcin, J.
    Kováč, J.
    Vlasák, G.
    Janičkovič, D.
    Škorvánek, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534100.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.37.Hk
    68.37.Lp
    Opis:
    Rapidly quenched bilayers consisting of Fe-Si-B and Co-Si-B layers have been prepared by planar flow casting from a single crucible with two nozzles. Temperature dependences of electrical resistivity, dilatation and magnetization have been investigated in the amorphous state and during crystallization of both layers. Preliminary studies of the structure of the layers and of the interlayer have been performed by X-ray diffraction, cross-sectional electron microscopy and microanalysis. From the results it seems evident that the process of connection of the two layers during preparation takes place by solidification with only a small extent of mutual interdiffusion of component atoms localized to a narrow well-defined interface, leading to mechanically solid connection between the two layers. The effect of combined presence of two different soft magnetic alloys on the overall magnetic properties is discussed with respect to potential applications of such materials.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 832-834
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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