Frequency dependence of coercivity in rapidly quenched amorphous materials

The frequency f and field amplitude H-0 dependence of coercivity in different amorphous wire shaped materials: amorphous Fe- and Co-based wires and microwires can be generally described as H-cd = H-co + B(fH(0))(1/n) where H-cd is the dynamic coercivity, H-co the static coercivity, B the coefficient depending on intrinsinc parameters of materials and n the coefficient ranging from 1 to 3, depending on geometry and hysteresis loop of materials. Experimental results are obtained in the frequency range up to 1 kHz. (C) 1997 Elsevier Science S.A.