Optimization of Soft Magnetic Properties in Fe82Nb2B14RE2 (RE = Y, Gd, Tb and Dy) Group of Amorphous Alloys
A. Chrobak a, G. Haneczok b, O. Zivotsky c, A. Hendrych c, J. Kansy b and B. Kotur d
aUniversity of Silesia, Institute of Physics, Uniwersytecka 4, 40-007 Katowice, Poland
bUniversity of Silesia, Institute of Materials Science (SMCEBI), 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
cVŠB-Technical University of Ostrava, Institute of Physics, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic
dIvan Franko National University of Lviv, Kyryla and Mefodia St. 6, 79005 Lviv, Ukraine
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Enhancement of soft magnetic properties in the selected group of amorphous alloys was examined by different experimental methods. It was shown that permeability for annealed samples (at Ta for 1 h; 300 K < Ta < 900 K) plotted vs. Ta shows a maximum at which is 700, 725, 725, and 750 K for Fe82Nb2B14Y2, Fe82Nb2B14Gd2, Fe82Nb2B14Tb2 and Fe82Nb2B14Dy2 alloy, respectively. For samples after the optimization annealing permeability is at least 10 times higher than in the as-quenched state. The optimized microstructure is free of iron nanograins and corresponds to so-called relaxed amorphous phase.

DOI: 10.12693/APhysPolA.130.916
PACS numbers: 81.07.Bc, 75.50.Tt, 75.60.-d, 76.80.+y