[Zurück]

D.S. Su, H.W. Zandbergen, P.C. Tiemeijer, G. Kothleitner, M. Hävecker, C. Hébert, A. Knop-Gericke, B.H. Freitag, F. Hofer, R. Schlögl:
"High resolution EELS using monochromator and high performance spectrometer: comparison of V₂O₅ ELNES with NEXAFS and band structure calculations";
Micron, 34 (2003), S. 235 - 238.

High resolution EELS using monochromator and high performance spectrometer: comparison of V2O5 ELNES with NEXAFS and band structure calculations

D. S. Su [Corresponding Author Contact Information] , [E-mail The Corresponding Author] , a, H. W. Zandbergenb, P. C. Tiemeijerc, G. Kothleitnerd, M. Häveckera, C. Héberte, A. Knop-Gerickea, B. H. Freitagc, F. Hoferd and R. Schlögla

a Department of Inorganic Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Faradayweg 4-6, D-14195, Berlin, Germany
b Laboratory of Materials Science, Centre for HREM, Delft University of Technology, Rotterdamseweg 137, 2628 AL, Delft, The Netherlands
c FEI Electron Optics, P.O. Box 80066, 5600 KA, Eindhoven, The Netherlands
d Research Institute for Electron Microscopy, Graz University of Technology, Steyrergasse 17, A-8010, Graz, Austria
e Institut für Festkörperphysik, Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040, Wien, Austria

Available online 27 May 2003.


Abstract

Using single crystal V2O5 as a sample, we tested the performance of the new aberration corrected GATAN spectrometer on a monochromatised 200 kV FEG FEI (S)TEM. The obtained V L and O K ELNES were compared with that obtained in a common GATAN GIF and that in the new spectrometer, without monochromatised beam. The performance of the new instrumentation is impressive: recorded with an energy-resolution of 0.22 eV, the V L3 edge reveals all the features due to the bulk electronic structure, that are also revealed in near-edge X-ray absorption fine structure (NEXAFS) with a much higher energy-resolution (0.08 eV). All features of the ELNES and NEXAFS are in line with a theoretical spectrum derived from band-structure calculations.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04405825

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