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Sound Velocity Measurements in Highly Oriented and Intercalated Graphite Specimen by Direct Electromagnetic Excitation of Ultrasound

  • K. de Groot
  • V. Müller
  • D. Maurer
  • V. Geiser
  • H.-J. Güntherodt
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 51)

Abstract

Actually Graphite Intercalation Compounds (GIC) are of increasing practical and fundamental interest because of their highly anisotropic structure and high in-plane conductivity. Along the c axis they show a well-defined periodic sequence of graphite layers and ordered (or disordered) intercalant layers. Compared to the strongly coplanar bonded graphite layers, the interlayer interactions are relatively weak, thereby giving rise to highly anisotropic physical properties. In spite of numerous investigations, however, the origin of the long-range forces involved in the formation of the interplane intercalation structure, as well as the quasi 2D commensurate-to-glass phase transition /1/,/2/, are still not well understood. Ultrasonic measurements therefore are of particular interest since they provide direct information about the interaction forces among the intercalant and graphite layers. Moreover, the sound velocity is highly sensitive to cooperative phenomena and therefore to thermodynamical structural fluctuations appearing in the vicinity of a phase transition point.

Keywords

Sound Velocity Graphite Layer Ultrasonic Pulse Phase Transition Point Cooperative Phenomenon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. /1/.
    G. Timp, M.S. Dresselhaus, L. Salamanca-Riba, A. Erbil, L.W. Hobbs, G. Dresselhaus, P.C. Eklund and Y. Jye: Phys. Rev. B26, 2323 (1982)ADSGoogle Scholar
  2. /2/.
    P. Bak and T. Bohr: Phys.Rev. B27, 591 (1983)ADSGoogle Scholar
  3. /3/.
    D.M. Hwang, B.F. O’Donnell and Y. Wu: in Physics of Intercalation Compounds, ed. by L. Pietronero and E. Tosatti (Springer Series in Solid State Sciences 38, 1981 ) p. 193CrossRefGoogle Scholar
  4. /4/.
    K. Saermark and P.K. Larsen: Phys.Lett. 24A, 374 and 668 (1967);ADSGoogle Scholar
  5. also see: J.R. Houck, H.V. Bohm, B.W. Maxfield and W. J. Wilkins; Phys. Rev.Lett. 19, 224 (1967)CrossRefADSGoogle Scholar
  6. /5/.
    K. Fredenhagen and G. Cadenbach: Z.allg.anorg.Chem. 158, 249 (1926)CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1984

Authors and Affiliations

  • K. de Groot
    • 1
  • V. Müller
    • 1
  • D. Maurer
    • 1
  • V. Geiser
    • 2
  • H.-J. Güntherodt
    • 2
  1. 1.Institut für Atom- und Festkörperphysik BFreie Universität BerlinBerlin 33W.-Germany
  2. 2.Institut für PhysikUniversität BaselBaselSwitzerland

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