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The measurement results for the ring-shaped core made of the amorphous Co67Fe3Cr3B12Si15 alloy was annealed for 1 h at 440 °C in the presence of magnetic field H, which is equal to 40 kA/m applied in the direction of the amorphous alloy ribbon. The maximal points of the minor hysteresis loops follow the normal magnetization curve (blue line—hysteresis loop for magnetizing field Hm = 0.5 A/m; green line—Hm = 1.5 A/m; red line—Hm = 3 A/m).
