Electric conductivity and cation ordering in the octahedral sublattice of solid solutions with spinel structure

Abstract

1. The concentration dependences of the activation energy of electric conductivity in solid solutions with spinel structure can provide valuable information on the type of short-range order in the octahedral sublattice. 2. In the octahedral sublattice of solid solutions with type 2–3 spinel structure there exist type 1∶7, 1∶3, 3∶5, and 1∶1 short-range order configurations of differently charged cations. 3. Making use of the composition dependence of the activation energy of electric conductivity, one may calculate the cation distribution in the sublattices for systems characterized by more than one cation distribution function. 4. Knowing the cation distribution in a solid solution, it is possible to predict the concentrations at which minimal and maximal activation energies should be expected.