Data di Pubblicazione:
2005
Abstract:
Using scanning tunneling microscopy and infrared reflection absorption spectroscopy we have observed that the alpha-Fe2O3(0001) surface exhibits ferryl (Fe=O) groups, which may coexist with domains of the Fe-terminated surface. We therefore fully support ab initio calculations recently reported in the literature [W. Bergmeyer, H. Schweiger, and E. Wimmer, Phys. Rev. B 69, 195409 (2004)]. The close similarity to the results on the (0001) surfaces of Cr2O3 and V2O3 strongly suggests that the M=O termination under certain oxygen pressure conditions is the most stable for the close-packed surfaces of transition metal oxides with the corundum structure.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
leed; CO adsorption; IR spectra; chromia
Elenco autori:
C. LEMIRE; S. BERTARIONE; A. ZECCHINA; D. SCARANO; A. CHAKA; S. SHAIKHUTDINOV; H. J. FREUND
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