Structural and Giant Magneto-impedance properties of Cr-incorporated Co-Fe-Si-B amorphous microwires

► Cr incorporation in CoFeSiB alloy enhanced thermal stability against devitrification. ► Optimal Cr content induced low magnetostriction in the rapidly quenched microwires. ► High GMI ratio and field sensitivity was obtained with optimum Cr in the microwires. ► Annealing treatment at 725 K for 15 min improved the GMI response of microwires.