Understanding the metal-carbon interface in FePt catalyzed carbon nanotubes

Any tip functionalization of carbon nanotubes, for which the relative orientation between their (metallic) catalyst particle and the nanotube axis is essential, requires a detailed knowledge of the nature of the internal interface between the particle and the outgrown tube. In the present work, this...

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Bibliographic Details
Published in:Physical review letters 2011-10, Vol.107 (18), p.185501-185501, Article 185501
Main Authors: Pohl, D, Schäffel, F, Rümmeli, M H, Mohn, E, Täschner, C, Schultz, L, Kisielowski, C, Rellinghaus, B
Format: Article
Language:English
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Summary:Any tip functionalization of carbon nanotubes, for which the relative orientation between their (metallic) catalyst particle and the nanotube axis is essential, requires a detailed knowledge of the nature of the internal interface between the particle and the outgrown tube. In the present work, this interface is characterized with atomic precision using state-of-the-art low-voltage aberration-corrected transmission electron microscopy in combination with molecular dynamics simulations for the case of hard-magnetically terminated carbon nanotubes. Our results indicate that the physical principle based upon which the interfacial metal facet is chosen is a reduction of the desorption energy for carbon.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.107.185501