Dielectric behavior of nano-structured and bulk Li Ni Zn ferrite samples

► Nanosamples of Li0.1(Ni1−xZnx)0.8Fe2.1O4 and their bulk counterparts have been prepared. ► Investigated properties are ac conductivity, dielectric constant and loss tangent. ► An essential decrease in σac in all samples except Ni Zn ferrite is due to incorporation of Li. ► Further decreases in σac and ε′ of nanosamples than the bulk ones are due to the nanosize.