“…Compared to metallic magnetic nanoparticles and nanoalloy with enhanced magnetic properties, such as Fe, Co, FePt, and CoPt, − the soft magnetic FeCo alloy nanoparticles are of great interest for extensive applications because of their unique magnetic properties, , such as large permeability, high saturation magnetization, and Curie temperature. As we know, alloying iron with 30 atomic % cobalt , results in a higher room temperature saturation magnetization (δ s = 245 emu/g), which make FeCo alloy nanoparticles show a huge potential in practical applications.…”