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Structural and Elemental Characterization of Fe/Co Nanoparticles Produced through Organometallic Synthesis

  • P. L. Fejes (a1), F. Dumestre (a2), C. Amiens (a2), P. Renaud (a3), B. Chaudret (a2) and P. Zurcher (a1)...

Abstract

We report on the structure of and elemental distributions within various magnetic nano-particles synthesized using organometallic precursors. The characterization was carried out using high-resolution transmission electron microscopy (HRTEM), and electron energy loss spectroscopy (EELS), with spectral imaging to investigate elemental distributions within the particles. The crystallinity and oxidation of Fe, Co and Fe-Co particles are discussed. We observe heavy oxidation of Fe particles, while Co particles show, at most, only a thin surface layer of oxide. When Fe and Co are combined to form Fe-Co particles, they are seen to be inhomogeneous, consisting of an Fe core, surrounded by a Co-rich shell.

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Dumestre, F., Chaudret, B., Amiens, C., Fromen, M., Casanove, M., Renaud, P. and Zurcher, P., Angew. Chem. Int. Ed. 41 42864289 (2002).
Dumestre, F., Amiens, C., Chaudret, B., Fromen, M. C., Casanove, M. J., Renaud, P. and Zurcher, P. in Bio-Inspired Nanoscale Hybrid Systems (Mater. Res. Soc. Proc. Boston, MA, 2002) (submitted)
de Ruijter, W.J., Sharma, R., McCartney, M.R. and Smith, David J., Ultramicroscopy 57 409422 (1995).
4. Egerton, R.F., Electron Energy Loss Spectroscopy in the Electron Microscope, 1st ed. (Plenum Press, New York, 1986) pp. 256, 257.

Structural and Elemental Characterization of Fe/Co Nanoparticles Produced through Organometallic Synthesis

  • P. L. Fejes (a1), F. Dumestre (a2), C. Amiens (a2), P. Renaud (a3), B. Chaudret (a2) and P. Zurcher (a1)...

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