Effect of manganese doping on the structural, morphological, optical, electrical, and magnetic properties of BaSnO_3

摘要

ABO_3 perovskites show unusual property modifications by proper substitution at the A and B sites. Polycrystalline perovskite BaSnO_3 samples doped with different concentrations of manganese (BaSn_(1-x)Mn_xO_3) were synthesized by solid-state reaction method. Rietveld refinement of XRD analysis confirmed the structure and phase purity of the synthesized compound. Diamagnetic-to-paramagnetic transition and optical bandgap tuning indicate the substitutional effect of Mn in the host BaSnO_3 lattice. The strong reverse saturable absorption of the synthesized samples makes them ideal candidate for optical limiting applications. The frequency and composition-dependent dielectric studies reveal that Mn-doped BaSn_(1-x)Mn_xO_3 can be used for high-frequency device applications. The cycling retention in the specific capacitance of 96.2% at a current density of 25 mA/g even after 2500 cycles in Mn-doped BaSnO_3 electrode can be used in energy storage devices for super-capacitor applications.