Figure 6From: Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress Dependencies of core loss (a) and initial magnetic permeability (b) on frequency. (1) Core annealed in furnace (T a = 550°C, t a = 90 min). (2) Core made of ribbon heated by electric current (j h = 42 A/mm2, t h = 3.7 s). (3) Core made of helix-like ribbon heated by electric current (j h = 42 A/mm2, t h = 3.7 s).Back to article page