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Pt point contact electrodes were used to characterise the cathodic processes occurring at the Sr(Zr,Dy)O 3-δ /Pt contacts. The cathodic polarisation experiments were performed in a potentiostatic mode by superimposing an AC signal on a DC bias. Impedance spectra in the frequency range 10 -3 -10 5 Hz were thus used to separate the ohmic resistance from the electrode...
Impedance measurements were carried out on the oxide ion conductor Zn 2-2x Ti 1+x O 4 in the frequency range between 20 Hz and 10 6 Hz below 600 o C. The frequency dependence of the electric modulus M'' shows the double peak shape in the cubic structure. These results are different from the previously studied Zn 2-x ...
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