Investigation of the oxide shell forming on ɛ-Co nanocrystals Journal Articles

abstract

• This paper reports on the TEM characterization of the surface oxide layer forming on Co nanocrystals (NCs) prepared using a standard method [Puntes, V.F., Krishnan, K.M., Alivisatos, P., 2001. Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal epsilon-Co nanoparticles. Appl. Phys. Lett. 78 (15), 2187-2189]. Complementary transmission electron microscopy (TEM)-related techniques presented direct evidence of a 1.5-3nm CoO shell forming on epsilon-Co NCs. The crystalline structure of the Co NCs was confirmed by selected area diffraction study while the nature of the shell was probed by energy-loss near-edge spectroscopy and energy-filtered TEM. Based on these results, we comment on the detection of nanoscale feature with energy-filtered imaging.

authors

• Braidy, N
• Behal, S
• Adronov, Alex
• Botton, Gianluigi

status

• published 

publication date

• August 2008

has subject area

• 0204 Condensed Matter Physics (FoR)
• 0912 Materials Engineering (FoR)
• 0915 Interdisciplinary Engineering (FoR)
• Cobalt (MeSH)
• Microscopy (Science Metrix)
• Microscopy, Electron, Transmission (MeSH)
• Nanoparticles (MeSH)
• Oxides (MeSH)

published in

• Micron  Journal

keywords

• Cobalt
• Microscopy, Electron, Transmission
• Nanoparticles
• Oxides

Digital Object Identifier (DOI)

• 10.1016/j.micron.2007.10.017

PubMed ID

• 18036823

start page

• 717

end page

• 722

volume

• 39

issue

• 6