CONTROLLING THE PARTICLE-SIZE OF AMORPHOUS IRON NANOPARTICLES

A method for controlling the particle size of amorphous iron, which wa s prepared by the sonication of iron pentacarbonyl [Fe(CO)(5)], is rep orted in this paper. The sonolysis was performed on neat Fe(CO)(5) and its solutions in decane whose concentrations were 4 M, 1 M, and 0.25 M. The iron nanoparticles were subjected to TEM (Transmission Electron Micrograph), ESR (Electron Spin Resonance), TGA (Thermogravimetric An alysis), DSC (Differential Scanning Calorimetry), and Quantum Design S QUID magnetization measurement. The measured properties demonstrated a strong independence on the concentration of the solution, e,g., parti cle size.