“Tuning Structural and Optical Properties of Co₀.₅Mn₀.₅₋ₓZnₓFe₂O₄ Nanoferrites via Zn Substitution for Optoelectronic Applications”. Sana’a University Journal of Applied Sciences and Technology, vol. 4, no. 6, June 2026, pp. 2209-18, https://doi.org/10.59628/jast.v4i5.2925.