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This work deals with structural and electrical investigations for different ZnO nanoparticles annealed at 300, 400 and 500°C. The ac conductivity increases with temperature following the Arrhenius law, with single apparent activation energy for conduction process. The frequency dependence of the electric conductivity follows a simple power law behavior, in accord to the relation σac(T,ω)=A(T)ωs(T,ω),...
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