Paper Title:
Characterization of Iron and Its Nitride Nanoparticles Prepared by CVC Process without Using a Chiller
  Abstract

Iron and its nitride (e-Fe3N) nanoparticles were fabricated by the CVC using Fe(CO)5 precursor without the aid of LN2 chiller. The iron particles synthesized at 400 oC were a mixture of amorphous and crystalline a-Fe. Fully crystallized iron particles were then obtained above 600 oC. Iron-nitride particles that were easily formed at 500 oC at 1 atm., however, were not fully developed in vacuum unless the reaction temperature reached 850 oC. 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 (~20 nm) synthesized at 600 oC at 760 torr exhibited iHc ~ 1.0 kOe and Ms ~ 170 emu/g, whereas the iron-nitride particles (~20 nm) synthesized at 850 oC at 0.01 torr exhibited iHc ~ 0.45 kOe and Ms ~ 115 emu/g.

  Info
Periodical
Materials Science Forum (Volumes 486-487)
Edited by
Hyung Sun Kim, Sang-Yeop Park, Bo Young Hur and Soo Wohn Lee
Pages
518-521
DOI
10.4028/www.scientific.net/MSF.486-487.518
Citation
D.W. Lee, T. S. Jang, D. H. Lee, B. K. Kim, "Characterization of Iron and Its Nitride Nanoparticles Prepared by CVC Process without Using a Chiller", Materials Science Forum, Vols. 486-487, pp. 518-521, 2005
Online since
June 2005
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