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    Wyświetlanie 1-5 z 5
    Tytuł:
    Application of Anisotropic Vector Preisach Model for Bulk Materials
    Autorzy:
    Frydrych, P.
    Szewczyk, R.
    Nowicki, M.
    Charubin, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032677.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.-d
    75.60.Ch
    75.60.Nt
    75.30.Gw
    85.70.-w
    Opis:
    In this paper possibility of application two-dimensional vector Preisach model for bulk materials was investigated. Physical magnetization mechanisms in bulk cores and thin ribbons were analyzed. Model is based on collection of the Preisach planes which describe material state in different angles on rotation plane. Presented model exhibits good conformity with experimental data for bulk as well for ribbon shaped cores. Model includes anisotropy and describes not only mean magnetization vector, but also distribution of magnetic moments for different angles.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 618-620
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computational Modeling of Magnetic Properties and Glass Forming Ability of Bulk Amorphous Materials
    Autorzy:
    Kabaer, M.
    Ovalioglu, H.
    Kucuk, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534071.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.70.pe
    84.35.+i
    75.50.Vv
    75.50.Kj
    Opis:
    A model based on artificial neural network was designed for the simulation and estimation of glass forming ability parameters and saturation magnetization and coercivity of bulk glassy alloys. Its performance is evaluated by the influences of different kinds of alloys and elements on the glass forming ability and magnetic properties. The values of glass forming ability parameters and saturation magnetization and coercivity values estimated by artificial neural network agree well with the experimental values, indicating that the model is reliable and adequate.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 827-828
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of spark plasma sintering on microstructure and properties of bulk LaCaSrMnO magnetocaloric materials
    Autorzy:
    Zmorayová, K.
    Antal, V.
    Kováč, J.
    Diko, P.
    Noudem, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1053176.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.47.Lx
    61.72.-y
    75.30.Kz
    77.80.B-
    81.70.Pg
    81.20.Ev
    81.30.Fb
    Opis:
    Polycrystalline La_{0.67}Ca_{0.33-x}Sr_xMnO₃ (x=0.33, 0.03, 0) (LCSM) perovskite samples treated by spark plasma sintering technique were investigated. This study proved influence of the sintering temperature on microstructure of these perovskite ceramics. The thermogravimetric measurements revealed the possibility of increase of oxygen content in studied LCSM samples by additional annealing under oxygen atmosphere and low temperature. Finally, the effect of this annealing on magnetic properties was demonstrated.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 804-806
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Nanostructures on the Surface and Bulk Physical Properties of Materials
    Autorzy:
    Kamanina, N.
    Shurpo, N.
    Likhomanova, S.
    Serov, S.
    Vasilyev, P.
    Pogareva, V.
    Studenov, V.
    Uskokovic, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503338.pdf
    Data publikacji:
    2011-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.70.-a
    42.79.-e
    78.20.-e
    78.30.Na
    Opis:
    Fullerenes, nanotubes, quantum dots are considered as effective sensitizers to modify both the optical, nonlinear optical features, dynamic and polarization characteristics, as well as mechanical and spectral properties of the organic and inorganic materials. The correlation between photorefractivity and photoconductivity was supported and the relation between charge carrier mobility of pure conjugated structures and nanoobjects-doped ones has been revealed. An increase of transmission of nanostructured polarization films was observed. An extension of the nanocomposites applications area is considered.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 2; 256-259
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Materials Modifications with Cluster Beams: Bulk and Surface Modification
    Autorzy:
    Dunlop, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2011014.pdf
    Data publikacji:
    1999-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.16.-d
    61.80.-x
    Opis:
    It is now well accepted that electronic excitation and ionization arising from the slowing down of swift heavy ions can lead to structural modifications in some metallic targets as it has been known for a long time in insulators. A rapid overview of some results obtained after GeV monoatomic heavy ion irradiations will be given. It will then be shown that new specific effects take place during irradiations with cluster ions. The projectiles used are energetic cluster beams: 10 to 40 MeV Au$\text{}_{4}$ or C$\text{}_{60}$ ions. The rates of linear energy deposition in electronic excitation are close for GeV monoatomic and for 10 MeV cluster ions, but the cluster ions have characteristic velocities which are one order of magnitude smaller than those of monoatomic ions. This leads to a strong spatial localization of the deposited energy during the slowing down process. The density of deposited energy can then reach values as high as a few 100 eV/atom. This very high density of energy deposited in the electronic system of the targets can lead to spectacular structural modifications: generation in the vicinity of the ion trajectories of isolated or agglomerated point defects, new crystalline phases, amorphized regions... After an overview of such damage induced in bulk metals, semiconductors, and insulators, we will discuss surface damage, consisting in the formation of bumps, craters, "lava-flows" on the target surface.
    Źródło:
    Acta Physica Polonica A; 1999, 96, 2; 181-195
    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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