Magnetic Properties of ${\rm Fe}_{56.7}{\rm Ni}_{10}{\rm Si}_{33.3}$

The magnetic properties of polycrystalline Fe 56.7 Ni 10 Si 33.3 were investigated. For this purpose, frequency-dependent hysteresis loops, minor loops, and losses were determined. The coercivity and the losses measured under sinusoidal and triangular conditions increase strongly with the frequency, whereas under constant dB/dt conditions, they are nearly frequency independent. The minor loops as measured under constant dB/dt are also nearly frequency independent. The magnetostriction of Fe 56.7 Ni 10 Si 33.3 is rather small, as typical for a 3d-based alloy.