Magnetic moment and high-field susceptibility of amorphous FeB Invar-type alloys

Abstract

The saturation magnetization and high-field susceptibility of amorphous Fe100-xBx (11 ≤ x ≤ 22) alloys have been measured at 4.2 K, 77 K and room temperature in magnetic fields up to 100 kOe. The concentration dependence of the saturation moment per iron atom shows a maximum around 14% boron, while the high-field susceptibility increases remarkably with decreasing boron content. The features are similar to those of crystalline FeNi Invar alloys. © 1978.