Characterization of Calcinated Ni–Cu Ferrite Nanoparticles Synthesized by Citrate-gel Auto combustion Technique. Iraqi Journal of Science [Internet]. 2021 Mar. 30 [cited 2024 Nov. 27];62(3):878-8. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2482