The study of Giant Magnetoimpedance (GMI) effect of the amorphous alloys system of Fe72-xCoxNb6B10Si11Cu1 (for x = 35 and x = 40 at. percent Co) and AC magnetic susceptibility for the amorphous alloy of Fe37Co35Nb6B11Si10Cu1 composition are presented in this chapter. The importance of GMI effect for the improvement of technological applications in sensor devices in amorphous magnetic Fe- and Co-based alloys is introduced; then it is described as the experimental procedure of magnetoimpedance and AC magnetic susceptibility measurements. The obtained results are discussed and finally the conclusions are presented.
Part of the book: Magnetic Materials