Autor: Kravčák, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Domain Wall Dynamics in Bistable Ferromagnetic Laminations
Autorzy:: Kravčák, J.
Šuhajová, V.
Powiązania:: https://bibliotekanauki.pl/articles/1506929.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.60.Ch
75.60.Ej
75.60.Jk
Opis:: The presented article deals with a model of magnetic reversal in conducting lamination with a one central ferromagnetic layer and two outer non-ferromagnetic layers. Considering a single rigid 180° domain wall spreading through the axially magnetized ferromagnetic layer the calculation of induced eddy currents in lamination is performed. The dependence of single domain wall mobility on the thickness of ferromagnetic layer is displayed. The effect of non-homogeneous magnetic field intensity generated by eddy currents is also discussed.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 734-735
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Complex Permeability After-Effect and Analysis of Power Losses in Ferromagnetic Co-Based Amorphous Alloy
Autorzy:: Kravčák, J.
Varga, R.
Vojtaník, P.
Powiązania:: https://bibliotekanauki.pl/articles/1813518.pdf
Data publikacji:: 2008-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Gb
75.60.Ch
75.60.Lr
Opis:: Complex permeability $(μ=μ_1-iμ_2)$ after-effect of near-zero magnetostrictive CoFeCrSiB amorphous alloy was investigated in magnetic field H (t)= $H_0$ exp ( i 2π f t) after demagnetization. For frequencies f from 200 Hz to 2000 Hz and for the small amplitude H_0 < $H_{cr}$ we observed practically constant both real $μ_1$ and imaginary part $μ_2$ of permeability. A measured small decrease in the real part $μ_1$ and increase in the imaginary part $μ_2$ with frequency f were theoretically calculated for a quadratic form of a domain wall potential $E_S$ (x)=1/2α $x^2$. The calculated loss factortan δ = $μ_2 μ_1$, which is small at amplitude $H_0$ < $H_{cr}$, corresponds to power losses due to eddy currents induced around reversibly moving domain walls.
Źródło:: Acta Physica Polonica A; 2008, 113, 1; 43-46
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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