Structural changes accompanying the isothermal annealing of the metall
ic glass Fe18Co60Si9B13 were investigated by X-ray diffraction, positr
on annihilation as well as by electrical resistivity and the Wall resi
stivity measurements. It has been found out that at the temperature of
673 K the complete crystallization did not occur, but only a few nucl
ei of the alpha-Fe phase, which did not grow, were formed.