Magnetic Properties of Nanostructured Fe₄₀Ni₃₈Mo₄B_l8

Nanostructured Fe₄₀Ni₃₈Mo₄B_l8 prepared by crystallization technique has a microstructure of nanometer-sized fcc (Fe, Ni) solid solution crystallites embedded in a nanometer-thick amorphous matrix. The nanostructured Fe₄₀Ni₃₈MO₄B_l8 obtained at 740K has the optimal soft magnetic properties. The maximal magnetic softening can be understood by considering the combination of the zero anisotropy and the lowest saturation magnetostriction.