EFFECTS OF Co DOPING ON PROPERTIES OF ILMENITE NiTiO3 CERAMICS

Tran Tat Dat

Abstract


Pure and Co-doped NiTiO3 nanocrystalline powders were prepared by the sol-gel method. The effect of Co2+ doping on structural, optical and magnetic properties of NiTiO3 was investigated by X-ray diffraction, UV-vis absorption, Raman spectroscopy and vibration samples magnetometer. It was found that all fabricated samples were in single phase with rhombohedral structure. The presence of Co modifies the optical properties of the NiTiO3 nanocrystalline powders. Co doping in NiTiO3 resulted in decreasing of optical bandgap from 2.34 to 1.91 eV. The undoped and Co-doped samples


Keywords


NiTiO3, Co-doped NiTiO3, ilmenite, sol-gel, optical.

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DOI: https://doi.org/10.15625/2525-2518/56/1A/12512

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Published by Vietnam Academy of Science and Technology