On Distribution of Relaxation Times in Some Ferroelectrics

  • Ishibashi Yoshihiro
    Synthetic Crystal Research Laboratory, Faculty of Engineering Nagoya University
  • Takagi Yutaka
    Synthetic Crystal Research Laboratory, Faculty of Engineering Nagoya University

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The assumption of gaussian distribution of relaxation times adopted by Hill and Ichiki for the explanation of experimental data on frequency dependence of dielectric constants ε of TGS and DKDP is examined. It is known that the above assumption is inadequate since it fails to predict the critical slowing down around the phase transition temperature. It is shown analytically that the above assumption is not suitable for the explanation of ε in high frequency region. An alternative distribution function of relaxation times is shown.

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