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Abstract

Iron oxide nanoparticles of undoped and manganese doped were prepared from natural sand of Logas District Kuansing Regency Riau Province using ball milling method. Structural and morphological properties of these undoped and manganese doped iron oxide nanoparticles in the range of 0%-20%. were studied. Crystalline size, interplanar spacing and surface morphologies of the samples were estimated and the results are discussed. The X-Ray Diffractometer (XRD) analysis reveals that diffraction peaks shift to slightly smaller angles as compared with undoped samples due to bigger atomic radii of manganese (161 pm) as compared to that of iron (156 pm). The average crystalline size of the manganese doped iron oxide nanoparticles increases with increasing manganese content up to 10%. Further increase in manganese content to 15% reduces the average grain size, which might be because of the presence of more manganese atoms at the grain boundaries. Moreover, peaks corresponding to manganese oxide or metal manganese could not be observed in the diffraction patterns. Some other diffraction peaks from other crystalline forms such as silicon (Si) and titanium (Ti) were observed. Morphology of undoped and doped manganese iron oxide nanoparticles is irregular, agglomerated and non-homogenous distribution visualized through scanning electron microscopy (SEM).