Structural and electric properties of La0.7Sr0.25Na0.05Mn0.9Ti0.1O3 ceramics

This work studies structural and various electrical properties of polycrystalline La0.7Sr0.25 Na0.05 Mn0.9Ti0.1O3 (LSNMTi), which were prepared by standard solid state reaction technique. The formation of a single phase rhombohedral structure of the composition was confirmed by the X-ray diffraction study. The electrical behavior of sintered pellets investigated by impedance spectra has shown frequency dependent behavior. Both conductivity and electric modulus formalisms have been used to study the relaxation dynamics of charge carriers. The variation of ac conductivity with frequency at different temperatures obeys the universal Jonscher׳s power law (σacαw).