A method was developed for separation of ionic and electronic conductivity in mixed conductors. The procedure was accomplished by using blocking electrodes and the Kramers–Kronig relations for separating the dc conductivity from total response. This method was applied to Li inserted and de-inserted sample of Pr0.56Bi0.04Li0.2TiO3. This material was an ionic conductor, and after insertion, electronic conduction appears in the sample. The de-inserted sample had a similar electric behavior to the original material. This method does not need any previous model when processing the data. Hence, it avoids those modelling related mistakes and increased the possibilities of dielectric spectroscopy.

Separation of Electronic and Ionic Conductivity in Mixed Conductors from the ac Response - Application to Pr0.56Bi0.04Li0.2TiO3. M.F.García-Sánchez, N.Fernández, M.L.Martínez-Sarrión, L.Mestres, F.Fernández-Gutierrez, G.Santana, A.R.Ruiz-Salvador: Applied Physics Letters, 2008, 93[3], 034105