Surface Coercive Force of Some Metallic Glasses

Abstract

The coercive force of amorphous ferromagnetic ribbons depends on surface properties. In order to investigate this dependence the ribbons are thinned step by step from airside and/or wheel‐side and the coercive force is measured at each step. Supposing that the coercive force can be divided in volume and surface contributions these parts are determined from the measured curves: coercive force vs. inverse ribbon thickness. The investigations are made on Fe100–yBx and Fe85−yCryB15 metallic glass ribbons with different quality of surface layers.