Dr. Hashim Jabbar and Ameer F. Shamkhi published a paper entitled "Effect of Cobalt Ion Concentration and Thermal Annealing Temperature on Structural and Magnetic Properties of CoFe₂O₄ nanoparticles" in the "Plasmonics", which is indexed in Scopus/Springer Nature. the study aims to a co-precipitation method is utilized to synthesize Co_1-x(Fe₂O₄)_xNPs with varied cobalt ion concentrations, followed by thermal annealing at(T= 400 Cº–800 Cº) under mixed atmosphere (85% Ar and 15% H₂). Various characterization techniques are used to study structural, morphological, and compositional properties of the resulting NPs.