Effect of Annealing on Off-Diagonal GMI Effect of Co-Rich Amorphous Microwires

We studied giant magnetoimpedance (GMI) effect and magnetic properties of Co
_69.2
Fe
_4.1
B
_11.8
Si
_13.8
C
_1.1
amorphous as-prepared and annealed microwires. We observed that these properties can be tuned by heat treatment. High GMI effect has been observed in as-prepared Co-rich microwires. After appropriate annealing, we can observe fast DW propagation and GMI effect in the same sample. Annealing affects both diagonal and off-diagonal GMI components.