Structure and electrical transport properties of pure and Li2O-doped CuO/MgO solid solution

Li2O doping of the investigated system followed by calcination at 1073 K resulted in a measurable increase in values of σ, ɛ′ and tan δ with subsequent decrease in Eσ. These results were discussed in the light of the possible effective increase in the charge carriers concentration (Cu2+ions dissolved in MgO lattice) and also to an effective increase in mobility of these charge carriers by Li2O doping.