Magnetic Properties and Crystallization of the Fe75Si15B10 Amorphous Alloy Prepared by Mechanical Alloying

The magnetic order and crystallization of the amorphous Fe75Si15B10 alloy prepared by mechanical alloying was studied in situ by 57Fe Mössbauer spectroscopy. These measurements were carried out using a vacuum furnace, controlling the temperature in the absorber. From Mössbauer measurements the magnetic order temperature of the as-milled sample was estimated at about 675 K. In order to identify the crystalline phases formed during heating, Mössbauer measurements were analyzed together with X-ray diffraction analysis. Both results show the formation of several crystalline phases such as Fe5SiB2, Fe2B, Fe3Si, α-Fe, Fe–B composite and a residual amorphous phase.