The research of the characteristic of local crystalline phases in Co-based amorphous ribbon with asymmetrical loop

The hysteresis loops of the longitudinal field annealed Co₅₈Fe₅Ni₁₀ Si₁₁B₁₆ amorphous ribbons have an asymmetrical characteristic. This feature can be obtained at room temperature. Several factors about the formation of the phenomenon have been discussed by the experimental observation and simple phenomenological explanation. One of the significant factors, which can promote this behavior, is the magnetically harder crystalline phases grown in the amorphous matrix during annealing. Much attention was paid here to pursue a proper thermomagnetic process, which can provide a way to shift the loop of Co-based ribbons. The dependence of the microstructual characteristics of local crystalline phases on the annealing conditions was deeply studied. Based on this avenue, the Co-based ribbons with interesting asymmetrical magnetic feature can be manufactured for potential application.