In this study it was investigated influence of temperature and frequency on
permeability, coercivity and power loses of Fe81B13Si4C2 amorphous alloy.
Magnetic permeability measurements performed in nonisothermal and isothermal
conditions was confirmed that efficient structural relaxation was occurred at
temperature of 663 K. This process was performed in two steps, the first one
is kinetic and the second one is diffuse. Activation energies of these
processes are: Ea1 = 52.02 kJ/mol for kinetic and Ea2 = 106.9 kJ/mol for
diffuse. It was shown that after annealing at 663 K coercivity decrease about
30% and therefore substantial reduction in power loses was attained.
Investigated amorphous alloy satisfied the criteria for signal processing
devices that work in mean frequency domain.
The effect of temperature and frequency on magnetic properties of the Fe81B13Si4C2 amorphous alloy
