https://scholars.lib.ntu.edu.tw/handle/123456789/616415
標題: | Electronic structure of the Fe-layer-catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy | 作者: | Yueh C.L. Wei S.L. Wen C.Y. Chen L.C. LI-CHYONG CHEN |
公開日期: | 2001 | 卷: | 79 | 期: | 19 | 起(迄)頁: | 3179-3181 | 來源出版物: | Applied Physics Letters | 摘要: | 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. © 2001 American Institute of Physics. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-18044405149&doi=10.1063%2f1.1416165&partnerID=40&md5=1a00939f020d96e67918bf879178e344 https://scholars.lib.ntu.edu.tw/handle/123456789/616415 |
ISSN: | 00036951 | DOI: | 10.1063/1.1416165 |
顯示於: | 凝態科學研究中心 |
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