Effect of amorphous evolution on structure and absorption properties of FeSiCr alloy powders

► When Cr is 8 at%, after 60 h milling, D03 superlattice appeared. And exothermic peak appears at 685 K. ► With increasing Cr content, Ms decreases from 145 to 99 emu/g; μ″ is larger than the others at low frequency. ► The minimum reflectivity is −15.5 dB at 8.5 GHz for Cr content is 8 at% when thickness is 2 mm. ► The amorphous Fe78.5Si13.5Cr8 alloy can be applied as electromagnetic wave absorber.