Fabrication and Microstructure Evolution of Single Crystalline Sm2Co17 Nanoparticles Prepared by Mechanochemical Method

In this work we report fabrication and microstructural characterization of single crystalline Sm 2 Co 17 nanoparticles with an average size of 103.7 nm. These particles are fabricated using mechanochemical method and can be used for fabrication of high performance permanent magnets due to their high coercivity (20 kOe). Microstructure analysis reveals the inhomogeneity and defects in the nanoparticles. The origin of these defects was analyzed and discussed by systematic microstructural investigation of the as-milled, annealed, and washed samples. On the basis of these results, by further optimizing the processing parameters, properties of the nanoparticles can be improved.