Impact of MgO concentration and radiation dose on the opto-structural properties of TiO2
Journal of Physics and Chemistry of Solids(2021)
Abstract
The opto-structural properties of MgO–TiO2 loaded nanoparticles (binary oxides) were explored following exposure to gamma radiation and with different MgO molar concentrations. The influences of gamma radiation and different MgO molar ratios on the physical properties of the binary oxide were elucidated using X-ray diffraction, ultraviolet–visible–near infrared spectroscopy and differential scanning calorimetry curves. The oxides exhibited well-defined peaks in pairs through all opto-structural measurements. The lower and higher unoccupied molecular orbital energy along with ionization potential and electron affinity were also expounded for the synthesized oxides. The results revealed the high dependence of opto-structural properties of the binary oxides on both gamma irradiation and MgO molar concentration. For AC measurements, a deviation in the conduction mechanism and modulus were noted as a function of both radiation dose and MgO concentration. Theoretical investigations were incorporated to demonstrate the average coordination number, the molar volume, covalency and bond density.
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Key words
Binary oxides,MgO–TiO2,Gamma irradiation,Opto-structural properties,Optical dielectric parameters,AC conductivity
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