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Wyświetlanie 1-3 z 3
Tytuł:
Magnetic Relaxations in Amorphous $Fe_{61}Co_{10}Y_{8}Zr_{1}B_{20}$ Alloy
Autorzy:
Pietrusiewicz, P.
Błoch, K.
Gondro, J.
Nabiałek, M.
Dośpiał, M.
Szota, M.
Powiązania:
https://bibliotekanauki.pl/articles/1367356.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Lr
75.50.-y
75.50.Kj
75.30.Cr
Opis:
Effects of annealing on the disaccommodation phenomenon in bulk metallic glasses (BMGs), obtained by injection-casting method have been studied. The amorphous structure has been confirmed using X-ray diffractometer. The annealing process has been performed at temperature below the crystallization temperature. For all investigated samples the disaccommodation curves have been determined. The susceptibility and its disaccommodation have been used in order to define thermal and time stability of magnetic properties. Obtained results have also been used to determine activation energies of elementary processes.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 106-107
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time and Thermal Stability of Magnetic Properties in $Fe_{61}Co_{10}Y_{8}Nb_{1}B_{20}$ Bulk Amorphous Alloys
Autorzy:
Błoch, K.
Nabiałek, M.
Pietrusiewicz, P.
Gondro, J.
Dośpiał, M.
Szota, M.
Gruszka, K.
Powiązania:
https://bibliotekanauki.pl/articles/1367363.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Lr
75.50.-y
75.50.Kj
75.30.Cr
Opis:
The paper presents studies of time and thermal stability of magnetic properties in $Fe_{61}Co_{10}Y_{8}Nb_{1}B_{20}$ bulk amorphous alloys. The investigated sample was prepared by suction-casting method in the form of plate. The structure was studied using X-ray diffractometry. It was found that alloy was amorphous in the as-cast state. The magnetic properties were determined using completely automated set up for measurement of susceptibility and its disaccommodation. The disaccommodation curve was decomposed into three elementary processes, each of them was described by Gaussian distribution of relaxation times. From fit of theoretical curve the peak temperature, intensity at peak temperature, average activation energies, distribution parameter and pre-exponential factor of the Arrhenius law were determined. The obtained results indicate that the disaccommodation phenomenon in studied samples is related with directional ordering of atom pairs near the free volumes.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 108-109
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Production Method on Magnetization Processes of the $Fe_{61}Co_{10}Y_{8}Mo_{1}B_{20}$ Bulk Amorphous Alloys
Autorzy:
Nabiałek, M.
Dobrzańska-Danikiewicz, A.
Pietrusiewicz, P.
Stradomski, Z.
Dośpiał, M.
Szota, M.
Gondro, J.
Lesz, S.
Powiązania:
https://bibliotekanauki.pl/articles/1367372.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.43.Dq
75.60.Ej
75.50.Vv
75.30.Cr
Opis:
The aim of this paper was to show the influence of the manufacturing method of bulk amorphous alloys on the resulting magnetization processes. Samples in the form of plates were prepared by the injection or suction of liquid alloy into a copper mould. In order to determine the type and quantity of structural defects present in the bulk amorphous alloys, the indirect method, i.e. the approach to the ferromagnetic saturation, was applied. Studies revealed the presence of conglomerates of point defects, for both alloys. These defects were pinning sites of domain walls and their number, size and type was found to have a direct impact on the coercive field. Alloy produced by the suction-casting method was found to possess the highest number of these defects, and thus a higher coercive field value.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 112-113
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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