Exchange-coupled SmCo5/Co nanocomposites synthesized by a novel strategy

SmCo5/Co nanocomposites with exchange-coupling are synthesized by a reverse design where Co is decomposed from SmCo5 nanoparticles by hydrogen disproportionation process to fabricate two-phase nanocomposites. The novel design makes SmCo5 nanoparticles uniformly surrounded by Co nanoparticles, which avoids the alloying in traditional methods and achieves exchange-coupling.