Effect of Heat Treatment on the Microstructure and Magnetic Properties of Amorphous Alloy Fe 60 Co 19 Zr 9 B 12

morphous ribbons from alloy Fe 60 Co 19 Zr 9 B 12 are studied by differential thermal analysis and x-ray diffractometry after spinning the melt and one-stage and two-stage annealing. The magnetic properties (the saturation magnetization and the coercivity) are determined and the DTA curves are plotted. It is shown that the two-stage annealing affects positively the saturation magnetization and the coercivity.