SmCo₅/FeCo core/shell composites were fabricated through a magnetic self-assembly process. The core/shell structure was confirmed by TEM image. The effects of the mass percentage of FeCo nanoparticles on the magnetic exchange coupling between SmCo₅ and FeCo were investigated. The results showed that a higher mass percentage of FeCo nanoparticles led to a weaker magnetic exchange coupling between SmCo₅ and FeCo. The magnetic exchange coupling was beneficial to increase the (BH)_max of composites. The maximum (BH)_max of SmCo₅/FeCo composite was obtained when FeCo was 10 wt.%, achieving a 25% increase from single hard phase SmCo₅.

SmCo ₅ / FeCo核/壳复合材料是通过磁性自组装工艺制备的。核/壳结构通过TEM图像确认。研究了FeCo纳米颗粒的质量百分比对SmCo ₅与FeCo之间磁性交换耦合的影响。结果表明，较高质量百分比的FeCo纳米颗粒导致SmCo ₅与FeCo之间的弱磁交换耦合。磁交换耦合有利于增加复合材料的（BH）_max。当FeCo为10重量％时，获得了SmCo ₅ / FeCo复合材料的最大（BH）_max，与单硬质相SmCo ₅相比增加了25％。