Journal of Materials Science

, Volume 14, Issue 8, pp 1945–1951

Low frequency dielectric relaxation from complex impedance and complex electric ‘modulus’

  • M. Tomozawa
  • J. Cordaro
  • M. Singh


The low frequency dielectric characteristics of many materials are often difficult to obtain accurately because of the d.c. conductivity contribution, which is the major portion of the loss, and which has to be subtracted from the total dielectric loss. This is particularly true for small dielectric relaxation peaks which tend to be overwhelmed by the d.c. conduction loss. An equation was derived which enables one to calculate the dielectric characteristics at low frequency, for specimens with small dielectric relaxation peaks, without subtracting the d.c. conductivity, from the complex impedance plot and complex electric “modulus” plot.


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  1. 1.
    M. Tomozawa, “Treatise on Materials Science and Technology”, Vol. 12, (Academic Press, London, 1977) p. 283.Google Scholar
  2. 2.
    A. E. Owen, Prog. Ceram. Sci. 3 (1963) 77.Google Scholar
  3. 3.
    J. O. Isard, Proc. Inst. Elec. Eng. Suppl. 22 109 (1962) 440.Google Scholar
  4. 4.
    H. Namikawa, J. Non-Cryst. Solids 18 (1975) 173.Google Scholar
  5. 5.
    I. M. Hodge, M. D. Ingram and A. R. West, J. Electroanal. Chem. 74 (1976) 125.Google Scholar
  6. 6.
    R. J. Grant, I. M. Hodge, M. D. Ingram and A. R. West, J. Amer. Ceram. Soc. 60 (1977) 226.Google Scholar
  7. 7.
    J. M. Stevels, “Handbuch der Physik”, Vol. 20 (1957) p. 350.Google Scholar
  8. 8.
    J. O. Isard, J. Non-Cryst. Solids 4 (1970) 357.Google Scholar
  9. 9.
    F. A. Grant, J. Appl. Phys. 29 (1958) 76.Google Scholar
  10. 10.
    D. Ravaine, J. P. Diard and J. L. Souquet, J. Chem. Soc. Faraday Trans. II 71 (1975) 1935.Google Scholar
  11. 11.
    P. B. Macedo, C. T. Moynihan and R. Bose, Phys. Chem. Glasses 13 (1972) 171.Google Scholar
  12. 12.
    K. S. Cole and R. H. Cole, J. Chem. Phys. 9 (1941) 341.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1979

Authors and Affiliations

  • M. Tomozawa
    • 1
  • J. Cordaro
    • 1
  • M. Singh
    • 1
  1. 1.Materials Engineering DepartmentRensselaer Polytechnic InstituteTroyUSA

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