Author(s)

N. A. Elthair^1,2, Yousef A. Alsabah^1,3*, Eltayeb M. Mustafa¹, Abdelrahman A. Elbadawi^1,4, Abdal Sakhi. Suliman¹

¹Department of Physics, Faculty of Science and Technology, Al Neelain University, Khartoum, Sudan.
²Department of Physics, Faculty of Science, Jazan University, Jazan, KSA.
³Department of Physics, Faculty of Education and Applied Science, Hajjah University, Hajjah, Yemen.
⁴Faculty of Basic Studies, Future University, Khartoum, Sudan.

Nanoferrite materials had been synthesized to produce new alternate substance for reducing the rare or high cost of industrial materials. In this work, the Zn_0.5Mg_0.5-xLi_2xFe₂O₄ nanoferrite (x = 0.00, 0.10, 0.20, 0.30 and 0.40) was prepared by co-precipitation approach. Structural and optical properties were investigated for the Zn_0.5Mg_0.5-xLi_2xFe₂O₄ series by X-ray diffraction (XRD), Fourier transforms infrared (FTIR) and ultraviolet-visible (UV-Vis) spectroscopies. The XRD data showed that all samples of Zn_0.5Mg_0.5-xLi_2xFe₂O₄ series possess a cubic spinel with a space group (Fd-3m) structure and crystallite size decreased from 116 to 96 nm with a doping ratio. Lattice parameter founded to increases with Li¹⁺ ratio that result in the larger ionic radius of the Li¹⁺ cation. FTIR result verified the formation of spinel structure by appearance of the absorption bands around 420, 580 cm^-1. The energy band gap computed for Zn_0.5Mg_0.5-xLi_2xFe₂O₄ samples and it founded in the range of 3.28 - 3.12eV.

Crystal Structure, FTIR, Zn-Li Nanoferrite, XRD, Uv.vis, Zn-Li Nanoparticles

Elthair, N. , Alsabah, Y. , Mustafa, E. , Elbadawi, A. and Suliman, A. (2019) The Effect of Mg²⁺ Substitution with Li¹⁺ on Structural and Optical Properties of Zn_0.5Li_2xMg_0.5-x Fe₂O₄ Nanoparticles. Open Journal of Applied Sciences, 9, 702-709. doi: 10.4236/ojapps.2019.99057.