Analysis of the magnetoresistance contributions in a nanocrystallized Cr-doped FINEMET alloy

► Magnetoresistance (MR) of nanocrystallized Fe63.5Cr10Nb3Cu1Si13.5B9 up to 12 T. ► Small GMR effect due to non-aligned neighbouring Fe-Si nanograins. ► For large fields, slightly nonlinear MR due to the residual amorphous matrix. ► Negative AMR of the Fe-Si nanograins exhibiting the D03 structure. ► Negative AMR reported on melt-quenched Fe100−xSix solid solutions (15≤x≤28).