Three-peak behavior in giant magnetoimpedance effect in Fe73.5−xCrxNb3Cu1Si13.5B9 amorphous ribbons

A systematic study of the giant magnetoimpedance (GMI) effect in Fe73.5−xCrxNb3Cu1Si13.5B9 amorphous ribbons with x=0, 2, 4, 6, 8 and 10 is presented. The complex impedance in these compounds was measured for applied fields from −80 to 80 Oe at room temperature, via the so-called four-probe technique. Depending on the frequency, the experimentally observed GMI curves usually exhibit two types of behavior, namely single-peak (SP), and two-peak (TP). In this work, we emphasize the presence of a “three-peak behavior” in GMI curves. It occurs between SP and TP behaviors. The mechanisms leading to the three-peak behavior are discussed.