Advertisement

Melting of free sodium clusters

  • R. Kusche
  • Th. Hippler
  • M. Schmidt
  • B. von Issendorff
  • H. Haberland
Conference paper

Abstract

Heat capacities have been measured across the solid to liquid phase transition for free, mass selected sodium cluster ions, Na n + with 55 ≤ n ≤ 199. Results for the melting point and the latent heat of fusion are presented here. The melting points are about 30% lower than the bulk value, and show large variations (±50 K). They seem to be highest in a mass range, where both an icosahedral and an electronic shell closing occurs.

PACS

64.70.Dv Solid-liquid transitions 36.40.Ei Phase transitions in clusters 35.40.Qv Stability and fragmentation of clusters 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. Pawlow: Z. Phys. Chem. 65, 1 (1909)Google Scholar
  2. 2.
    R.R. Couchman: Philos. Mag. A 40, 637 (1979)ADSCrossRefGoogle Scholar
  3. 3.
    Ph. Buffat, J.P. Borel: Phys. Rev. A 13, 2287 (1976)ADSCrossRefGoogle Scholar
  4. 4.
    P. Labastie, R.i:. Whetten: Phys. R.v. Lett. 65, 1567 (1991)ADSCrossRefGoogle Scholar
  5. 5.
    R.S. Berry: Sci. Am., p. 50, August 1990Google Scholar
  6. 6.
    U. Buck, I. Ettischer: J. Chem. Phys. 100, 6974 (1994) 7Google Scholar
  7. U. Buck, I. Ettischer: T.P. Martin: Plies. Rep. 273, 199 (1996)CrossRefGoogle Scholar
  8. 8.
    S.L. Lai, J.Y. Guo, V. Petrova, G. Ramanath. L.H. Allen: Phys. Rev. Lett. 77, 99 (1996)ADSCrossRefGoogle Scholar
  9. 9.
    J.W. Hovicke L.S. Bartell: J. Mol. Strict. 413; 61i (1997)Google Scholar
  10. 10.
    NI. Schmidt, R. Kusche, W. Kronmüller, B. v.Issendorff, H. Haberland: Phys. Rev, Lett, 79, 99 (19971Google Scholar
  11. 11.
    G. Bertsch: Science 277, 1619 (1997)CrossRefGoogle Scholar
  12. 12.
    M. Schmidt, R. Kusche, W. Krori.müller, B. v.Issendorff, H. Haberland: Nature 393, 238 (1998)ADSGoogle Scholar
  13. 13.
    R.S. Berry: Nature 393, 212 (1993)ADSCrossRefGoogle Scholar
  14. 14.
    C.E. Klots: Z. Phys. D 5, 83 (1987)ADSCrossRefGoogle Scholar
  15. M. Jarold: Clusters of Atoms and _lloleczzles f ( Springer, Berlin 1994 ) p. 163Google Scholar
  16. 15.
    unpublished data of this group)Google Scholar
  17. 16.
    Ch. Ellert, M. Schmidt, Ch. Schmitt, Th. Reiners, H. Haber land: Phys. Rev. Lett. 75, 1731 (1995)ADSCrossRefGoogle Scholar
  18. 17.
    W.A. de Heer: Rev. Mod. Phys. 65, 611 (1993)ADSCrossRefGoogle Scholar
  19. M. Brack: Rev. Mod. Phys. 65 677 (1993)ADSCrossRefGoogle Scholar
  20. 18.
    C.L. Cleveland, W.D. Luedtke, U. Landman: Phys. Rev Lett. 81, 2036 (1998)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • R. Kusche
    • 1
  • Th. Hippler
    • 1
  • M. Schmidt
    • 1
  • B. von Issendorff
    • 1
  • H. Haberland
    • 1
  1. 1.Fakultät für PhysikUniversität FreiburgFreiburgGermany

Personalised recommendations