Composite magnetic materials based on nanocrystalline powders for middle- and high-frequency applications up to 1MHz

SiC dispersed Fe-based glassy composite cores produced by spark plasma sintering and their high frequency magnetic properties

“…Fig. 9 shows the frequency dependence of the core loss [29] and can be effectively reduced by appropriate insulation of the magnetic powder. The SiC filled into among Fe 73 Si 7 B 17 Nb 3 glassy alloy powders reduces the eddy current loss by separating the powders electrically from each other, resulting in good high frequency properties.…”

Soft magnetic materials for electrical engineering: state of the art and recent advances

“…They consist of 0.1-150 mm insulated Fe grains, which resist sintering at 500 C. We can, by this method, obtain complex shaped components for stators of special machines, where the magnetic flux is three-dimensional, requiring high induction isotropic materials (2.1 T). Densities of 7.3 g/cm 3 and permeabilities up to 500 have been reached. Finally, new formulations of Ni-Zn-Cu ferrites have been developed.…”

Permeability-frequency spectra of (Fe1−xcox)73.5Cu1Nb3Si13.5B9 nanocrystalline alloys under different magnetic fields

“…Finemet alloys have high permeability in low-frequency region. With increase of frequency, the permeability of Finemet alloys usually decreases rapidly [1,4]. Various nanogranular soft magnetic films with good high frequency properties have been developed recently [5].…”