Microwave-Assisted Combustion Synthesized Sm 2 Co 17 Magnetic Particles for Permanent Magnetic Application.

We reported the new synthesis of Sm₂Co₁₇ particles by a microwave-assisted combustion (MACS) method. This process enables the controlled decomposition of Sm(NO₃)₃ and Co(NO₃)₂ into SmCo-O particles, followed by calcium reduction-diffusion. This SmCo-O particle provides an approach for achieving high magnetic properties in Sm₂Co₁₇ magnetic materials. The rhombohedral Sm₂Co₁₇ particles can be incorporated into epoxy resin and oriented, displaying a square-like hysteresis loop. The particles display magnetic properties at room temperature, with a saturation magnetization of 112.3 emu/g, coercivity of 5.6 kOe, and a maximum energy product of 9.4 MGOe. This method improves the synthesis efficiency of rare earth cobalt-based nano-materials, expands the synthesis scope, and provides ideas for the synthesis and applications of other rare earth nano-materials. [ABSTRACT FROM AUTHOR]