Ibrahim F. Waheed, Thuraya Yarb Sabri, Najat A. Dahham and Faten Haithum Mulud 2021. Characterization of Calcinated Ni–Cu Ferrite Nanoparticles Synthesized by Citrate-gel Auto combustion Technique. Iraqi Journal of Science. 62, 3 (Mar. 2021), 878-888. DOI:https://doi.org/10.24996/ijs.2021.62.3.19.