The real and the imaginary parts of the complex permittivity of zirconia
were measured at frequencies from 614.39 to 3820.66 MHz and over the
temperature range 20 – 1800 oC. Two systems of the cavity perturbation
techniques were used, one in King Abdulaziz, University Saudi Arabia, and the
other in the University of Nottingham, United Kingdom. The electrical
conductivity and the activation energy of zirconia were calculated from these
measurements. The conduction mechanisms of zirconia, at high temperatures in
the microwave region, have been studied using these calculations.
1. Introduction: