Development Of Magnetic Fe@C Nanocomposites Obtained Via The Laser Pyrolysis: Structural And Disaggregation Properties

Fe@C) nanoparticles have been successfully synthesized using the laser pyrolysis method and variable nozzle geometries. At large nozzle diameters, XRD and SAED analysis clearly identified distinct α‐Fe and $Fe3C$ phases. TEM and HRTEM indicated that these Fe‐based nanoparticles have an average grain size of 3.5–10.2 nm. Temperature dependent Mössbauer spectra further confirm their distinct nanophases. By using a multi‐step reduction procedure, Fe@C powders can be disaggregated into stable, water soluble nanoparticles.