A new synthesis of SmCo₅ particles with high magnetic performance through spray pyrolysis

SmCo₅ particles were synthesized by a spray pyrolysis process with in situ hydrogen (H₂) reduction. The as-synthesized particles showed homogenous elemental distribution and low crystallization. The crystallization of the as-synthesized SmCo₅ particles was further increased by annealing at 700 °C in Ar environment. After the annealing, the SEM images showed that surface roughness of the particles was increased due to the reordering of the atoms, the XRD patterns showed that the crystallization of the particles was increased, and VSM characterization showed that the magnetic properties were improved. Finally, the magnetic properties of SmCo₅ particles synthesized in this report were compared with those in other reports. It was concluded that this paper proposed an easy way to synthesize high purity SmCo₅ particles with high magnetic performance. (paper)