TITLE

Comparison of electronic structures of RuO2 and IrO2 nanorods investigated by x-ray absorption and scanning photoelectron microscopy

AUTHOR(S)
Tsai, H. M.; Babu, P. D.; Pao, C. W.; Chiou, J. W.; Jan, J. C.; Krishna Kumar, K. P.; Chien, F. Z.; Pong, W. F.; Tsai, M.-H.; Chen, C.-H.; Jang, L. Y.; Lee, J. F.; Chen, R. S.; Huang, Y. S.; Tsai, D. S.
PUB. DATE
January 2007
SOURCE
Applied Physics Letters;1/22/2007, Vol. 90 Issue 4, p042108
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Electronic structures of the nanorods of RuO2 and IrO2 metallic oxides were investigated by x-ray absorption near-edge structure (XANES) and scanning photoelectron microscopy (SPEM). O K-, Ru, and Ir L3-edge XANES results reveal that hybridization between O 2p and metal t2g orbitals is weaker in IrO2 than in RuO2. The enhancement of the tip-region SPEM intensities relative to those in the sidewall regions for both RuO2 and IrO2 nanorods is found to extend over a large energy range in contrast to those of carbon nanotubes and ZnO nanorods, which are confined to deep below and near the Fermi level, respectively.
ACCESSION #
23906965

 

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