Abstract：The hysteresis loops of the longitudinal field annealed Fe65Co15Si5B15 amorphous ribbons have an asymmetrical characteristic. This feature can be obtained at room temperature. The change of microstructure was discussed in ribbons during annealing by XRD, DSC and SPM measurement. A few magnetic crystalline phases were identified in the amorphous matrix of annealed ribbons. The domain configuration of ribbons was obvious influenced by proper thermomagnetic annealing, which is also an important role in promoting the formation of the asymmetrical loops. The loop shift behaviour of Fe-based amorphous ribbons with our annealing method is efficient, steady and visible.
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2016, Vol. 23 
