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  • 1995-1999  (2)
  • 68.35  (1)
  • PACS: 61.48.+c; 68.35.-p; 68.35.Bs  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Morphology and orientational disorder of C70 single crystals (1995)
    Springer
    Applied physics 61 (1995), S. 17-21 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 81.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract C70 single crystals, free from solvent contamination, were grown via vapor phase transport technique. The (0001) face of the C70 crystal was imaged with Atomic Force Microscopy (AFM) under ambient atmosphere. Low-resolution images of a freshly prepared crystal revealed well-ordered faceted regions with multiple terraces extending over a region of several hundred square nanometers. The terraced structure in the images indicates that the crystals formed as a layer growth. In the high-resolution images, C70 molecules were resolved in a hexagonal close packed (hcp) structure with an average center-to-center distance of 10.5±0.5 Å. After one month's exposure to the ambient atmosphere, the molecules rearranged into a mixed structure consisting of hcp and face centered cubic (fcc) regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538204
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    AFM observation of surface reconstruction of C60 single crystals (1998)
    Springer
    Applied physics 66 (1998), S. S763 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.48.+c; 68.35.-p; 68.35.Bs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 60 single crystals. The (111) and the (001) faces of C60 single crystals were illuminated with photons with energies below the band gap (generation of Frenkel-type excitons) or above the band gap. In the case of sub-band-gap illumination, reconstructed surfaces formed on the crystals. The reconstruction was represented by fringes running in the [11 ] and [0 0] directions on the (111) and (001) surfaces, respectively. As a result of supra-band-gap illumination, however, there appeared only cracks, without any fringes, which were oriented in directions characteristic of each face. The results suggest that the photo-induced surface reconstruction of C60 single crystals is induced via the recombination of Frenkel-type excitons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051238
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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