Počet záznamů: 1

Thermal Effect on Structure Organizations in Cobalt-Fullerene Nanocomposition

  1. 1.
    0334547 - UJF-V 2010 RIV US eng J - Článek v odborném periodiku
    Lavrentiev, Vasyl - Vacík, Jiří - Naramoto, H. - Sakai, S.
    Thermal Effect on Structure Organizations in Cobalt-Fullerene Nanocomposition.
    Journal of Nanoscience and Nanotechnology. Roč. 10, č. 4 (2010), s. 2624-2629 ISSN 1533-4880
    Grant CEP: GA AV ČR(CZ) KAN400480701; GA AV ČR IAA200480702; GA MŠk(CZ) LC06041
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: cobalt * fullerene * simultaneous deposition
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 1.351, rok: 2010

    Effect of deposition temperature (Ts) on structure of Co-C60 nanocomposite (NC) prepared by simultaneous deposition of cobalt and fullerene on sapphire is presented. AFM and SEM show granule-like structure of the Co-C60 film. The mixture film deposited at RT includes the hilus on the surface suggesting accumulation of internal stress during phase separation. Raman spektra show 25 cm-1 downshift of Ag(2) C60 peak suggesting -Co-C60- polymerization in C60-based matrix of the NC film. Analysis of Raman spectra has revealed existence of amorphous karbon (a-C) in the NC matrix that argues C60 decomposition. The Ts increase to 200°C causes the surfaře hills smoothening. In parallel, downshift of the Ag(2) peak decreases to 16 cm-1 that implies more pronounced phase separation and lower -Co-C60- polymerization efficiency. Also, amount of a-C content slightly increases. Further Ts increasing to 400°C changes the NC structure dramatically.
    Trvalý link: http://hdl.handle.net/11104/0179257