Creep-induced anisotropy in amorphous glass-covered wires

Abstract
Results on the creep-induced anisotropy in CoFeSiB amorphous glass-covered wires with nearly zero magnetostriction and in such wires after glass removal are reported for the first time. The particular characteristics of such magnetic materials determine particular aspects of this anisotropy induced by stress-annealing. For the experimental investigation of the creep-induced anisotropy we used for the first time magneto-impedance-based measurements. Stress-annealed wires after glass removal behave similar to conventional in-rotating-water quenched amorphous wires with the same composition. The glass-covered wires display a specific behavior originating in the presence of the glass cover.