Electrical conductivity peculiarities of SrTiO3ZrO2-ceramic system

Ceramic (1−x)SrTiO3-xZrO2 samples with x=0, 0.2, 0.4, 0.6, 0.8 and 1.0 were synthesized using solid-state processing techniques. Coexistence of the cubic Pm3¯m phase and the tetragonal P42/nmc phase was found for the compositions with x=0.2, 0.4, 0.6 and 0.8 through the use of XRD analysis and SEM experiments. These phases are in separate grains of the material. An examination of the electrical properties of all the compositions showed unusual behaviors of the temperature and compositional dependencies of the specific electrical conductivity for the composition with x=0.2.