Compositional Impact on Characterization, Dielectric, and Rietveld Investigation of Cu-Mg Nano Ferrites. - Gabr, W. A.; Wazeer, Wael; Kashyout, Abd El‑Hady B.; Saafan, S. A.; Tawfik, W. M.; El-Ghazzawy, E. H. (Journal of Electronic Materials, 2025)