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Investigations and Applications of Nanoperm-Type Soft Magnetic Materials

100%
Hasiak M., Łukiewski M., Miglierini M., Kaleta J.
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issue 5
829-831
EN
The microstructure and magnetic properties of Fe_{82}Zr_4Nb_3B_{10}Cu_1, Fe_{80}Zr_4Mn_3B_{12}Cu_1 and Fe_{80}Zr_4Ti_3Cu_1B_{12} alloys were investigated. Using RALE software the basic parameters of transformers made from nanocrystalline alloys with about 25% and 50% of crystalline phase were calculated. The transformer made from Fe_{80}Zr_4Ti_3Cu_1B_{12} alloys after annealing at 773 K for 1-shows the lowest core losses and highest efficiency.
2
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Magnetocaloric Properties of Fe₇₅Mo₈Cu₁B₁₆ and Fe₈₁Mo₈Cu₁B₁₀ Metallic Glasses

100%
Hasiak M., Miglierini M., Kaleta J., Bujdoš M.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
608-610
EN
Microstructure and thermomagnetic properties for the Fe₇₅Mo₈Cu₁B₁₆ and Fe₈₁Mo₈Cu₁B₁₀ metallic glasses in the as-quenched state and after heat treatment at 643 K and 723 K are studied. The inverse change of the Curie point was observed for Fe₇₅Mo₈Cu₁B₁₆ metallic glass after annealing below the onset of crystallization. It is attributed to structural relaxation of the amorphous phase. The maximum of magnetic entropy change calculated for magnetic field of 1.0 T occurs for the Fe₇₅Mo₈Cu₁B₁₆ alloy annealed at 643 K at temperature close to the Curie point and equals 0.74 J kg¯¹ K¯¹.
3

Aspekty bezpieczeństwa w zakresie ciśnieniowego magazynowania wodoru w zbiornikach samochodowych

100%
Błażejewski W., Gąsior P., Kaleta J.
Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych
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2010
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issue 5
22-28
4
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Low Field Magnetic Properties of FeCo-Based Alloys

88%
Hasiak M., Miglierini M., Łukiewska A., Kaleta J., Zbroszczyk J.
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vol. 126
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issue 1
118-119
EN
Low field magnetic properties of amorphous (Fe_{x}Co_{1})_{76}Mo_{8}Cu_{1}B_{15} alloys (x=3, 6 and 9) were characterized by magnetic after-effect and initial magnetic susceptibility. Activation energies and pre-exponential factors of the Arrhenius law that were derived from the disaccommodation curves are of about 1.188 eV and 10^{-15} s, respectively. Local magnetic arrangement was investigated by ^{57}Fe Mössbauer spectrometry. The average hyperfine magnetic field decreases with increasing Fe/Co ratio due to smaller relative contribution of cobalt. The overall magnetic parameters of the alloy prove its good soft magnetic properties with an application potential.
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