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用磁控溅射方法制备了Ｓｍ２２Ｃｏ７８／Ｆｅ６５Ｃｏ３５双层膜，并对其在２６℃（室温）≤Ｔ≤１５０℃范围内的磁性进行了研究。从各个温度下磁化曲线的单一性可以看到： ＳｍＣｏ硬磁层和ＦｅＣｏ软磁层两相之间存在着很强的交换耦合。矫顽力随温度的提高是单调减小的，相对变化率为４．７×１０－３；剩磁及饱和磁化强度随着温度的提高基本上是减小的；而剩磁比随温度的提高，则是单调上升的，这说明软、硬磁相之间的交换相互作用随温度的提高是单调增加的。
Sm22Co78 / Fe65Co35 bilayer films were prepared by magnetron sputtering and their magnetic properties at 26 ℃ (room temperature) ≤T≤150 ℃ were studied. From the unity of the magnetization curve at each temperature, it can be seen that there is a strong exchange coupling between the two phases of the SmCo hard magnetic layer and the FeCo soft magnetic layer. The coercivity decreases monotonously with the increase of temperature, and the relative rate of change is 4.7 × 10-3. The remanence and saturation magnetization basically decrease with the increase of temperature. Increase monotonically, which shows that the exchange interaction between soft and hard magnetic phases increases monotonically with the increase of temperature.