Electronic structure of the Fe-layer-catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy

機構典藏 > College of Sciences > Graduate Institute & Department of Physics > Journal Article > Item 987654321/72626

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/72626

Title:	Electronic structure of the Fe-layer-catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
Authors:	Yeh, C. L.;Jan, J. C.;Chiou, J. W.;Pong, W. F.;Tsai, M.-H.;Chang, Y. K.;Chen, Y. Y.;Lee, Y. F.;Tseng, P. K.;Wei, S. L.;Wen, C. Y.;Chen, L. C.;Chen, K. H.
Contributors:	淡江大學物理學系
Keywords:	carbon nanotubes;electronic structure;XANES;charge exchange
Date:	2001-11
Issue Date:	2013-05-31 11:32:51 (UTC+8)
Publisher:	College Park: American Institute of Physics
Abstract:	X-ray-absorption near edge structure (XANES) measurements have been performed to investigate the local electronic structures of the Fe-catalyzed and stabilized carbon nanotubes (CNT) with various diameters. The intensities of the π∗- and σ∗-band and the interlayer-state features in the C K-edge XANES spectra of these CNTs vary with the diameter of the CNT. The white-line features at the C K- and Fe L3-edges suggest a strong hybridization between the C 2p and Fe 3d orbitals, which lead to an enhancement of the C K- and reduction of the Fe L3-edge features, respectively, indicative of a charge transfer from C 2p to Fe 3d orbitals. The Fe K-edge spectra reveal a p–d rehybridization effect that reduces p-orbital occupation at the Fe site.
Relation:	Applied Physics Letters 79(19), pp.3179-3181
DOI:	10.1063/1.1416165
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

Files in This Item:

File	Description	Size	Format
1.1416165.pdf		347Kb	Adobe PDF	459	View/Open
index.html		0Kb	HTML	318	View/Open