Investigation of the bulk conductivity of BaZr0.95M0.05O3-α(M =Al, Er, Ho, Tm, Yb and Y) under wet N2

Samples of BaZr 0.95 M 0.05 O 3-α (where M = Al, Er, Ho, Tm, Yb and Y) were prepared by solid state reaction method. The bulk conductivity of the specimens under wet N 2 exposure was studied as a function of temperature, dopant ionic radius and the electronegativity of dopants. The correlation between the conductivity and electronegativity of the dopant, which has not been reported in any other studies, will be discussed.