Recently, the giant magnetoimpedance (GMI) effect has attracted great interest owing to their possible applications as high sensitive field sensors [1]. The GMI effect has been studied in many materials with different geometry and structures including...
Recently, the giant magnetoimpedance (GMI) effect has attracted great interest owing to their possible applications as high sensitive field sensors [1]. The GMI effect has been studied in many materials with different geometry and structures including amorphous ribbons and wires. Glass-covered microwires have been recently become a new family of amorphous magnetic GMI materials [2-3]. Generally, as-quenched amorphous microwires have inferior GMI effect to conventional amorphous wires due to large internal stresses caused by the glass cover and the fabrication procedure. Appropriate heat treatments have been applied on the microwires to improve soft magnetic properties by reducing the magnetoelastic coupling.
In this paper, we investigate the annealing effect on the GMIof Co-based amorphous microwires by illuminating pulsed Nd-Yag laser in order to find the laser energy optimizing the GMI effect.