Abstract
Multiferroic nanoparticles having general formula BiFe0.99-xMnxCu0.01O3 (x = 0, 0.01, 0.02, 0.03 & 0.04) were prepared by a chemically derived method to explore the magneto-electric characteristics of this new class of materials. X-ray diffraction confirmed that all the samples had rhombohedraly distorted cubic perovskite 3D lattice. Lattice constant was increased with increasing concentration of Mn. Micrographs obtained from a field emission scanning electron microscope revealed a fine distribution of well-shaped particles while the particle size was increased with increased contents of Mn. Enhanced hopping mechanism induced by substitution of Mn at the lattice sites of Fe resulted in an increased AC conductivity. Ferroelectricity was observed to increase with increased Mn, attributed mainly to the leakage current due to free charge carriers instigated by multiple oxidation states of Fe and Mn. It has been observed that antiferromagnetic bismuth ferrite begins to show ferromagnetic behavior due to the collapse of antiferromagnetic spin structure with increased Mn contents.
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The authors extend their sincere appreciations to the Deanship of Scientific Research at King Saud University for funding this Research Group No. RG 1435-004.
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Khalid, A., Atiq, S., Ramay, S.M. et al. Magneto-electric characteristics in (Mn, Cu) co-doped BiFeO3 multiferroic nanoparticles. J Mater Sci: Mater Electron 27, 8966–8972 (2016). https://doi.org/10.1007/s10854-016-4927-1
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DOI: https://doi.org/10.1007/s10854-016-4927-1