Iron and its nitride (epsilon-Fe3N) nanoparticles were fabricated by the CVC using Fe(CO)(5) precursor without the aid of LN2 chiller. The iron particles synthesized at 400 degrees C were a mixture of amorphous and crystalline alpha-Fe. Fully crystallized iron particles were then obtained above 600 degrees C. Iron-nitride particles that were easily formed at 500 degrees C at 1 atm., however, were not fully developed in vacuum unless the reaction temperature reached 850 degrees C. Nevertheless, the work chamber needed to be maintained in vacuum to obtain finer iron-nitride particles. The synthesized particles possessing the core-shell type structure were all nearly spherical and enclosed with Fe3O4 or Fe3O4-related amorphous layer. The iron nanoparticles (similar to 20 nm) synthesized at 600 degrees C at 760 torr exhibited H-i(c) similar to 1.0 kOe and M-s similar to 170 emu/g, whereas the iron-nitride particles (similar to 20 nm) synthesized at 850 degrees C at 0.01 torr exhibited H-i(c) similar to 0.45 kOe and M-s similar to 115 emu/g.