Abstract
This study details the effect of the co-substitution of Ni4+ ions for Mn4+ ions on the structural, morphological, electrical, and magnetic parameters of BaMn1-xNixO3 (x = 0.1, 0.3, 0.5, 0.7, and 0.9) synthesized by the co-precipitation route. XRD pattern confirmed the hexagonal (P6(3)/ mmc (194), z = 2) phase for all samples and an additional significant secondaries phases, such as BaMn2O3, Mn2NiO3, Mn3O4, Mn2NiO4, and NiO for all doping levels. The crystallite size is obtained to be 36.8 to 90.2 nm and independent of Ni content; such a trend in SEM images presented the regular hexagonal platelets of sizes similar to 84-390 nm. Also, the ratio of Gs/Cs varies between 2 and 5. EDX revealed the presence of constituent elements with their weight percentages in BaMn1-xNixO3 products. rho(XRD) and rho(exp) are estimated to be around 5.9370 g/cm(3). The porosity, P, decreases by 60% with increasing Ni-90%. The sigma(DC) increases with increasing temperature impress semiconductor behavior. SPH model is the best fit for the conductivity data. The activation energy is calculated to be (0.21-0.33) eV and increased 3 times with increasing Ni content. The magnetic hysteresis loops demonstrate the paramagnetic (PM) behavior for the tested manganite compound, where BaMn1-xNixO3 possesses paramagnetic phases and increment of Ni-content affects the magnetic parameters as M-s, remnant M-r, H-c, and magnetic moment n(B). H-c increases to 2%; inversely, M-s decreases to 2%, increasing Ni-90%. The attractive electromagnetic properties suggest that BaMn1-xNixO3 could be a promising potential material in the fabrication of magnetic devices on an industrial scale.