Understanding the structure and charge transport mechanism of Sm2NiMnO6 double perovskite prepared via low temperature auto-ignition method

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 P2(1)/n. This crystal structure is discussed in details. The room temperature conductivity is 1.6 x 10(-6) Omega(-1) cm(-1). The values of total activation energy, dc activation energy, hoping energy andmigration 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. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

This study investigates the structure and conduction mechanism of Sm2NiMnO6 prepared via auto-ignition method. The monoclinic structure with space group P2(1)/n was confirmed through Rietveld refinement of the XRD pattern. The room temperature conductivity was measured to be 1.6 x 10(-6) Omega(-1) cm(-1), indicating charge carriers conduction via hopping mechanism.