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Influence of 1% Addition of Nb and W on the Relaxation Process in Classical Fe-Based Amorphous Alloys

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Pietrusiewicz P., Błoch K., Nabiałek M., Walters S.
Acta Physica Polonica A
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2015
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vol. 127
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issue 2
397-399
EN
This paper features investigations into the influence of small additions of alloying elements on: structure, as well as the temporal and thermal stability of magnetic properties, and the disaccommodation effect, for the following amorphous alloys: Fe₆₁Co₁₀Y₈Me₁B₂₀ (where Me = Nb, W). The structure of the investigated samples has been confirmed by the Mössbauer spectroscopy. The obtained results indicate a strong correlation between the structure and the disaccommodation of the studied alloys. The Mössbauer studies reveal different configurations of atoms in the amorphous alloy samples, and the results indicate various potential barriers between orientations of atom pairs. For this reason, to describe the disaccommodation effect, the distribution of activation energy should be taken into account. The distribution of activation energy has been related to the distribution of relaxation times.
2
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Microstructure and Soft Magnetic Properties of Fe-Zr-(Pt)-Nb-Cu-B Amorphous Alloys

100%
Gondro J., Błoch K., Nabiałek M., Walters S.
Archives of Metallurgy and Materials
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2017
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vol. 62
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issue 2
3
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Structural Relaxation in the Amorphous Alloys: FeMeMoCrNbB (where Me = Ni or Co)

100%
Rzącki J., Błoch K., Walters S.
Acta Physica Polonica A
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2017
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vol. 131
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issue 4
720-722
EN
In this paper, the results of structural and magnetic investigations are presented for the following amorphous alloys: FeMeMoCrNbB (where Me = Ni or Co). The structural investigations were performed using X-ray diffractometry. It was found that the investigated samples were amorphous in the as-cast state. The magnetisation was measured within magnetic fields ranging from 0 to 1 T using a vibrating sample magnetometer. Investigation of the "magnetisation in the area close to ferromagnetic saturation" showed that the magnetisation process in strong magnetic fields is connected with the rotation of magnetic moments in the vicinity of defects, which are the sources of short-range stresses. Analysis of the high-field magnetization curves facilitated the calculation of the spin-wave stiffness parameter.
4
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Analysis of the Thermal and Magnetic Properties of Amorphous Fe61Co10Zr2.5Hf2.5Me2W2B20 (Where Me = Mo, Nb, Ni Or Y) Ribbons

52%
Dośpiał M., Gruszka K., Mizera J., Nabiałek M., Szota M., Bloch K., Gondro J., Pietrusiewicz P., Sandu A. V., Mustafa Al Bakri A. M., Walters S., Walters K., Garus S.
Archives of Metallurgy and Materials
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2016
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issue 2
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