Photofragmentation of mass-selected vanadium doped cobalt cluster cations

  • Nguyen Thanh Tung
  • Ewald JanssensEmail author
  • Soumen Bhattacharyya
  • Peter Lievens
Regular Article
Part of the following topical collections:
  1. Topical issue: ISSPIC 16 - 16th International Symposium on Small Particles and Inorganic Clusters


The stability of mass-selected vanadium doped cobalt cluster cations (Co n−1V+, n = 11–21 and Co13−m V m +, m = 0–3) is studied by photofragmentation. The clusters are produced by pulsed laser vaporization, mass-separated in a dual reflectron time-of-flight mass spectrometer, and photodissociated using the second harmonic of a Nd:YAG laser. The recorded fragmentation spectra show that all studied clusters prefer dissociation by loss of a cobalt atom. Sequential cobalt atom evaporation is found at higher laser fluences. No dissociation channel involving vanadium loss is observed, consistent with the V-Co bonds being stronger than the Co-Co bonds. Co12V+, which was predicted to have an icosahedral symmetry, is found to be the most stable cluster among the singly vanadium doped species. Consecutive increment of the vanadium concentration along the Co13 − m V m + (m = 0–3) series further confirms the enhanced stability of Co12V+, in excellent agreement with theoretical predictions [S. Datta, M. Kabir, T. Saha-Dasgupta, A. Mookerjee, Phys. Rev. B 80, 085418 (2009)].


Vanadium Versus Atom Vanadium Atom Hexagonal Closed Packed Dissociation Channel 
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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Nguyen Thanh Tung
    • 1
  • Ewald Janssens
    • 1
    Email author
  • Soumen Bhattacharyya
    • 2
  • Peter Lievens
    • 1
  1. 1.Laboratory of Solid State Physics and MagnetismKU LeuvenLeuvenBelgium
  2. 2.Atomic and Molecular Physics DivisionBhabha Atomic Research CenterMumbaiIndia

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