Charge density analysis and magnetic behavior of Li doped NiO nanostructures synthesized by sol-gel process
K. Sakthi Lavanya, B. Subha, M. Prema Rani, R.Saravanan
Li-doped nickel oxide nanostructures (Ni1-xLixO, x=0, 0.03 and 0.06) of crystallite size of around 20 nm have been prepared using the sol-gel process. The cell constant of the prepared samples decreases with the concentration of Li dopant. This ensures that Li occupies the host lattice of Ni. The electronic charge distributions in the unit cell were analyzed through the maximum entropy method (MEM) for the prepared cubic nickel nanostructure. The bonding features of the prepared doped nanostructures were analyzed and they are found to behave like covalent materials. From the UV analysis, the band gap was determined as 3.28 eV for NiO. Strong ferromagnetic behavior is observed for 3% Li doped NiO. Further addition of Li dopant causes decrease in ferromagnetism.
Keywords
Nanostructures, XRD, Rietveld Refinement, MEM, Electron Density
Published online 1/1/2017, 17 pages
DOI: https://dx.doi.org/10.21741/9781945291135-10
Part of Contemporary Dielectric Materials
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