Abstract
This study investigates the structure and conduction mechanism of Sm2NiMnO6 prepared via auto-ignition method. Rietveld refinement of the XRD pattern confirms the monoclinic structure with space group P21/n. This crystal structure is discussed in details. The room temperature conductivity is 1.6×10−6Ω−1cm−1. The values of total activation energy, dc activation energy, hoping energy and migration energy are 0.43 eV, 0.44 eV, 0.43 eV and 0.43 eV respectively. The closed value of all activation energy confirms the conduction of charge carriers via hopping mechanism. Variable range hopping model confirms the small polaron hopping in the material.
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