Thermal, magnetic and magnetocaloric properties of Fe 80− x M x B 10 Zr 9 Cu 1 (M=Ni, Ta; x =0, 3, 5) amorphous alloys

•Amorphous Fe80−xMxB10Zr9Cu1 (M=Ni, Ta; x=0, 3, 5) alloys were obtained by melt-spinning.•Both Ni and Ta addition cause the decrement in the crystallization temperature (Tx1).•With the increase of addition, TC increases for Fe80−xNixB10Zr9Cu1 but decreases in case of Ta.•RCAREA for the amorphous alloys with xNi=3, 5 and xTa=3 are comparable to that of Gd5Si2Ge2.•The studied alloys can be used as the MCMs working above room temperature.