用双喷嘴坩埚制备了非晶态合金Ｆｅ７８Ｓｉ９Ｂ１３ 和（ＦｅＮｉＣｒ）７８（ＳｉＢ）２２ 的单层带材和复合带，并测量了两种合金的叠绕铁芯和复合带铁芯的热磁曲线和磁滞回线．对于两种合金的叠绕铁芯，其磁滞回线呈蜂腰型，类似于两种合金各自磁滞回线的平均值，但并不完全相同．对于复合带铁芯，其热磁曲线与两种合金热磁曲线的平均值基本重合，而磁滞回线不仅不再是蜂腰型，且非常扁平．叠绕铁芯和复合带铁芯磁滞回线的这种变化源于叠绕铁芯和复合带铁芯中的内应力．这种内应力产生的根本原因是两种材料热膨胀系数和磁致伸缩系数的差别． The single-layer ribbons and composite tapes of amorphous alloy Fe78Si9B13 and (FeNiCr) 78 (SiB) 22 were prepared by twin-nozzle crucibles. The thermal magnetic curves of the two kinds of alloys, Hysteresis loop. For the two types of alloy core, the hysteresis loop is beehive type, which is similar to the average value of the hysteresis loops of the two alloys, but not completely the same. For the composite with iron core, the thermal magnetic curve and the average thermal magnetization curve of two alloys basically coincide, and the hysteresis loop is not only no longer bee-shaped, and very flat. This variation of the hysteresis loops of the laminated and composite tape cores results from the internal stresses in the laminated and composite tape cores. The root cause of this internal stress is the difference between the coefficient of thermal expansion and the magnetostriction of the two materials.