GIANT MAGNETO-IMPEDANCE EFFECT IN AMORPHOUS AND NANOCRYSTALLINE GLASS-COVERED MAGNETIC WIRES

Results on the giant magneto-impedance effect in CoFeSiB amorphous glass-covered wires and FeCuNbSiB nanocrystalline ones are reported. GMI measurements were performed on both glass-covered samples and on samples obtained after the glass removal. The sensitivity of the effect in nanocrystalline wires after glass removal was found to be higher than in amorphous CoFeSiB ones in the studied frequency range. The results are explained by taking into account the specific magnetic properties of each type of wire.