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Size-dependent magnetic properties of CoFe2O4 nanoparticles prepared in polyol

Mathieu Artus1, Lotfi Ben Tahar, Frédéric Herbst

  • 1ITODYS, Université Paris Diderot, CNRS UMR-7086, F-75205, Paris, France.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 29, 2011
PubMed

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Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.