On the characterization of disordered and heterogeneous carbonaceous materials by Raman spectroscopy.
The applicability of Raman spectroscopy to characterize disordered and heterogeneous carbonaceous materials (CM) is discussed, by considering both natural and synthetic CM. First, different analytical mismatches during the measurement are discussed and technical indications are provided in order to eliminate them. Second, the accuracy and relevance of the different parameters obtained by the decomposition of spectra by conventional fitting procedure, is reviewed. Lastly, a new Raman technique (Raman area mode microspectroscopy) giving an homogeneous repartition of power within a large laser beam is presented, this technique being powerful to study strongly heterogeneous CM and/or photosensitive samples.
Beyssac
Olivier
O
Laboratoire de Géologie, Ecole Normale Supérieure, CNRS UMR 8538, 24 Rue Lhomond, F-75231 Paris Cedex 05, France. olivier.beyssac@ens.fr
Goffé
Bruno
B
Petitet
Jean-Pierre
JP
Froigneux
Emmanuel
E
Moreau
Myriam
M
Rouzaud
Jean-Noël
JN
D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
D017554:Carbon Compounds, Inorganic; D009930:Organic Chemicals