Pulse annealing of FeSiB amorphous wires

The magnetic field dependence of magnetization and Young´s modulus of pulse-annealed Fe_77.5Si_7.5B₁₅ are reported. Coercivity and anisotropy energy density were measured as a function of annealing current and the tensile stress applied during annealing. It is shown that pulse annealing can remove the internal stresses more effectively than furnace annealing. Coercivity and anisotropy energy density fall by a few percent for annealing currents up to 1 A. Currents between 1 A and 1.5 A reduce both quantities by nearly an order of magnitude. Higher annealing currents result in sharp increases in the parameters, as crystallization begins