Effect of Fe to P concentration ratio on structures, crystallization behavior, and magnetic properties in (Fe0.79+xP0.1-xC0.04B0.04Si0.03)(99)Cu-1 alloys

The effect of Fe to P concentration ratio on structures, crystallization behavior, and magnetic properties in (Fe0.79+xP0.1-xC0.04B0.04Si0.03)(99)Cu-1 alloys was investigated. The increase of Fe to P concentration ratio changes the structure and crystallization process of as-quenched ribbon. Nanocrystalline alloys with excellent soft magnetic properties were synthesized upon annealing the as-quenched ribbon with primary crystals. The (Fe0.84P0.05C0.04B0.04Si0.03)(99)Cu-1 nanocrystalline alloy exhibits excellent magnetic properties, such as high saturation magnetic flux density of 1.74 T, low coercivity of 4.9 A/m, high effective permeability of 22 900 (at 1 kHz), low core loss of 3.1 W/kg at 1.0 T and 400 Hz, and 8.9 W/kg at 1.0 T and 1 kHz, respectively. (C) 2013 AIP Publishing LLC