Phonon Resonances Induced by Pb in KCl Studied by Means of Thermal Conductivity and Ionic Thermocurrent Techniques

  • M. Locatelli
  • R. Cappelletti
  • E. Zecchi


In order to study the evolution of Suzuki-like phase occlusions in KClPb (1), (2), by thermal conductivity measurements at low temperatures, we have to consider the phonon interactions with divalent ions Pb2+. These interactions were studied many times (3) and theoretical models were proposed. One model is based on one-phonon scattering due to the mass defect (4) with an extension proposed by M. WAGNER (5) to include two-phonon interactions. A second is based on one-phonon scattering due to force constant changes in the presence of a vacancy (6). In (3) J.W. SCHWARTZ et al. concluded that phonon scattering is mainly due the cationic vacancy; the divalent ion acts when its size differs from that of the host ion. Nevertheless they do not exclude the possibility of two-phonon processes as treated by M. WAGNER (5).


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  1. (1).
    M. Locatelli, R. Cappelletti, E. Zecchi, Correlated Thermal Conductivity and Ionic Thermocurrents Measurements to Study the Suzuki-like Phase Nucleation in KCl, paper presented at this conference.Google Scholar
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    R. Cappelletti, A. Gainotti, Journal de Physique, C7, 12 - 37, 316 (1976).Google Scholar
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • M. Locatelli
    • 1
  • R. Cappelletti
    • 2
  • E. Zecchi
    • 2
  1. 1.L.C.P.,S.B.T.,C.E.N.G.Grenoble CedexFrance
  2. 2.Istituto di Fisica dell’UniversitàParmaItaly

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