Study of Fe85 –xCrxB15 (x = 0–20) Amorphous Alloys by the 11B Nuclear Magnetic Resonance Method

Resumo

Amorphous alloys of Fe_{85 –x}Cr_xB₁₅ (x = 0–20) obtained by ultrafast melt quenching are investigated by the pulsed ¹¹В nuclear magnetic resonance (NMR) method at a temperature of 4.2 K. The amorphous alloys consist of microdomains (nanoclusters) with short-range orders of the tetragonal (Fe,Cr)₃B and α-(Fe,Cr)(B) phases, containing chromium atoms in the nearest neighbor environment of the iron atoms. The mean magnetic moments of the magnetic atoms in the nearest sphere of the boron atoms and their dependence on the composition in the nanoclusters are estimated.