Study of the short-range order of FeCoSiAlGaPCB amorphous alloys by EXAFS spectroscopy

Abstract The short-range order of (Fe x Co y B z C u ) 80 Si 3 Al 5 Ga 2 P 10 with x = 5 – 70 , y = 0 – 63 , z = 5 – 12 and u = 0 – 5 amorphous alloys has been investigated by X-ray absorption spectroscopy. The existence of some chemical preferences leading the B atoms to locate near Fe atoms and Si atoms near Co atoms can be concluded which allows to explain the small increase of the short-range order previously found for these alloys in the Co-rich side by Mossbauer spectrometry. Co and Fe neighbourhood in the amorphous was found to be similar to that of the crystalline phases formed during the primary crystallization.