The effect of N incorporation, into yttria-stabilized material, upon the conductivity was investigated by means of impedance spectroscopy. It was noted that, under isothermal conditions, the conductivity depended upon the total concentration of anion vacancies; regardless of additions of aliovalent cations (Y3+) or anions (N3-). An analysis of the Arrhenius plots resulted in higher activation energies for oxynitrides than for N-free samples (table 4).

Novel Zirconia-Based Superionic Conductors: the Electrical Conductivity of Y-Zr-O-N Materials. J.Wendel, M.Lerch, W.Laqua: Journal of Solid State Chemistry, 1999, 142[1], 163-7

Table 4

Activation Energies for Conduction in

N-Doped Y2O3-Stabilized ZrO2 above 750C