It was predicted that, for ionic conductivity relaxation within the framework of the coupling model, the magnitude of the common near-constant loss was related to the activation energy for independent ion hopping. This correlation was supported by experimental data on various ionic conductors. The model also explained an observed correlation between the size of the near-constant loss and the value of the direct-current conductivity at room temperature; as well as the temperature-dependence of the near-constant loss.

Correlation between Ion Hopping Conductivity and Near Constant Loss in Ionic Conductors. C.León, K.L.Ngai, A.Rivera: Physical Review B, 2004, 69[13], 134303 (5pp)