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    Effect of hydrogen charging on the electrochemical and magnetic properties of Fe73.5M1Nb3Si13.5B9 (M = Cu, Pt, Pd, Ag, Mn) alloys
    (Wiley-V C H Verlag Gmbh, 2002) Kolat, VS; Turkdemir, H; Adigüzel, HI; Atalay, FE; Atalay, S; Sovak, P
    The effects of hydrogen absorption on the electrochemical, magnetic and magnetoelastic properties of amorphous Fe73.5M1Nb3Si13.5B9 alloys (M = Cu, Pt, Ag, Pd, Mn) were investigated. Hydrogen was charged cathodically for 30 min with cathodic current density of 50 A/m(2) in all samples using 0.5 M H2SO4 solution with 0.1 g/l As2O3 as a poison. It was observed that the partial substitution of Pt. Mn, Ag, Pd for Cu in Fe73.5Cu1Nb3Si13.5B9 has a great influence in the hydrogen absorption properties.
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    The influence of chromium content on the properties of Fe74-xCrxCu1Nb3Si13B9 alloys
    (Wiley-V C H Verlag Gmbh, 2002) Bayri, N; Adigüzel, HI; Atalay, S; Sovak, P
    In this study, we have investigated the effect of Cr substitution on the structural, magnetic and magnetoelastic properties of Fe74-xCrxCu1Nb3Si13B9 (x = 2, 4, 8, 11, 14) alloys. The samples were annealed between 450 and 600 degreesC for 1 It under argon atmosphere to induce various nanocrystalline fractions. The change in microstructure upon annealing were examined by the X-ray spectrum data. A large influence of Cr content on the formation of alpha-FeSi phase was observed. The magnetic field dependence of the Young's modulus (DeltaE effect) was measured using the vibration reed method. The DeltaE results are interpreted partly in terms of the stress relief and the reduced magnetostriction in nanocrystalline samples.
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    Study of nanocrystalline Fe-M-Cu-Nb-Si-B (M = Cr, Co, Ni) ribbons by elastic modulus measurements
    (Elsevier Science Sa, 2001) Atalay, S; Adiguzel, HI; Squire, PT; Sovak, P
    The magnetic and magnetoelastic properties of Fe72M1.5Cu1Nb3Si13.5B9 (M = Co, Cr, Ni) samples have been investigated. The samples were annealed between 400 and 650 degreesC under argon atmosphere to induce varying nanocrystalline fractions. It was observed that the magnitude of field dependence of Young's modulus varies from 50% to nearly zero as the saturation magnetostriction is reduced by alpha -FeSi grains. The results are discussed in terms of stress relief and reduced magnetostriction constant. (C) 2001 Elsevier Science B.V. All rights reserved.