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Investigations of the charge transport properties in (LaMn)0.956O3 at low temperatures

The magnetization, dc conductivity, and dielectric relaxation of cation-deficient manganese perovskite (LaMn)0.956O3 have been investigated. (LaMn)0.956O3 shows a ferromagnetic transition around 166 K and a thermally activated dielectric loss peak is observed in the ferromagnetic phase. The transport is thermally activated with a change in slope at the ferromagnetic transition. The temperature dependency of the dc conductivity and dielectric relaxation processes provide evidence of hopping conduction below TC. The results have been discussed in terms of a hopping process of polarons localized by electron–lattice interaction in tandem with electron–magnon interaction.