Abstract

A study of microstructure (X-ray diffraction), magnetic properties (switching field associated with the magnetic bistability), and giant magnetoimpedance (GMI)effect in cold-drawn Fe77.5B15Si7.5 amorphous wire is presented. The initial amorphous wire (obtained by the in-rotating-water spinning technique) with a diameter of 125 mu m was subjected to cold drawing to decrease the diameter to 50 mu m. Such cold-drawn wire was subjected to current annealing for tailoring the magnetic and GMI properties.