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    Wyświetlanie 1-5 z 5
    Tytuł:
    Mechanism of Rotational Hysteresis Energy in Sm-Fe-N Permanent Magnets
    Autorzy:
    Pawlik, P.
    Wysłocki, J. J.
    Dziliński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030425.pdf
    Data publikacji:
    2002-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.60.-d
    Opis:
    Investigations were carried out on Sm-Fe-N permanent magnet produced by the reactive diffusion method with different grain sizes (from 8.6 to 0.97μm). The rotational hysteresis energy has been measured as a function of the applied field. The proposed model of rotational hysteresis energy is in good agreement with the experimental results. It is shown that the magnetization reversal process in Sm-Fe-N magnet is controlled by the nucleation of reversed domains.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 2; 267-277
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Single Domain Wall Contribution to the Impedance of Amorphous Ferromagnetic Wire
    Autorzy:
    Ziman, J.
    Šuhajová, V.
    Kladivová, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1200635.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.Gw
    75.47.-m
    75.50.Kj
    75.60.-d
    84.37.+q
    Opis:
    An experiment, measuring the changes of impedance in a magnetic wire, caused by the presence of a single domain wall was proposed. The results obtained from a magnetic wire with small helical anisotropy show that for lower frequencies (up to about 1 MHz), the presence of wall causes an increase in impedance, very probably due to the wall displacement. As frequency increases, the influence of the wall presence on the magnetic state causes the impedance to decrease in adjacent domains. For frequencies close to 10 MHz this effect overcomes the effect of wall displacement.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 82-83
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetoelastic Villari Effect in Structural Steel Magnetized in the Rayleigh Region
    Autorzy:
    Kachniarz, M.
    Kołakowska, K.
    Salach, J.
    Szewczyk, R.
    Nowak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030824.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.60.-d
    75.50.Cc
    75.80.+q
    07.10.Lw
    Opis:
    The following paper presents the results of investigation on the magnetoelastic Villari effect in structural steel magnetized in the so-called Rayleigh region, which corresponds to relatively low magnetizing fields, much lower than coercive field. Two grades of structural steel were investigated during the performed measurements. Obtained results indicate significant correlation between applied mechanical stress and magnetic properties of the investigated materials.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 660-662
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetoelastic Villari Effect in Ferrite Materials for Force and Stress Sensors Working in Low Magnetizing Field Region
    Autorzy:
    Kachniarz, M.
    Bieńkowski, A.
    Salach, J.
    Szewczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030958.pdf
    Data publikacji:
    2018-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.60.-d
    75.50.Gg
    75.80.+q
    07.10.Lw
    Opis:
    The following paper presents the original results of investigation on the magnetoelastic properties of ferrite materials magnetized in low field region, which could be utilized in development of force and stress sensors. The objects of investigation were two ferrite materials (manganese-zinc Mn-Zn and nickel-zinc Ni-Zn). The magnetoelastic characteristics of the materials were investigated with the special measurement system, allowing measurement of magnetic parameters of the ferrite materials magnetized with low fields under the influence of the compressive stress. The obtained results indicate that there is a strong correlation between the magnetic properties of the material in low magnetizing field region, and applied mechanical stress, which allows development of the magnetoelastic stress or force sensor with ferrite core working in low magnetizing field region.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 4; 1056-1059
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on the Rayleigh Hysteresis Model and its Applicability in Modeling Magnetic Hysteresis Phenomenon in Ferromagnetic Materials
    Autorzy:
    Kachniarz, M.
    Szewczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030243.pdf
    Data publikacji:
    2017-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.30.-m
    75.60.-d
    75.50.Gg
    75.50.Cc
    75.60.Ej
    07.05.Tp
    Opis:
    The following paper presents the basis of a Rayleigh magnetic hysteresis model and the examples of its application for modeling the magnetic characteristics of ferromagnetic materials: ferrites and steels. The presented model allows one to simulate the shape of a magnetic hysteresis loop of the material for the given value of the magnetizing field in the so-called Rayleigh region, as well as to calculate basic magnetic parameters of the material like coercive field, magnetic remanence, and power loss. Four different ferromagnetic materials (two ferrites and two alloy steels) were chosen for the investigation. Each material was investigated within the range of low magnetizing fields, corresponding to the Rayleigh region. On the basis of obtained results, modeling of magnetic characteristics of the investigated materials was performed. Moreover, the range of magnetizing field where the Rayleigh model can be applied for these materials was investigated based on correlation coefficient between experimental results and modeling.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 5; 1244-1249
    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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