Compositional Modulation of Zn _1‐x (Cu _0.5 Ni _0.5 ) _x Fe ₂ O ₄ Ferrite Nanoparticles: A Co‐Precipitation Route to Tunable Magnetic Properties

ABSTRACT This research examines the creation of zinc ferrite (ZnFe 2 O 4 ) along with various Cu‐Ni co‐doped ferrites that have different amounts of zinc, utilizing the co‐precipitation technique. The formulations studied consist of Zn 0 . 75 Cu 0 . 125 Ni 0 . 125 Fe 2 O 4 , Zn 0 . 5 Cu 0 . 25 Ni 0 . 25 Fe 2 O 4 , Zn 0 . 25 Cu 0 . 375 Ni 0 . 375 Fe 2 O 4 , and Cu 0 . 5 Ni 0 . 5 Fe 2 O 4 . XRD, SEM, FTIR, and VSM were employed to analyze structural, morphological, and magnetic characteristics. Findings indicate that an increase in Cu─Ni doping improves the magnetic properties and alters particle shape, thus providing adjustable characteristics for usage in magnetic technologies and microwave absorption systems. Structural, morphological, and magnetic properties were investigated using XRD, SEM, FTIR, and VSM.