Synthesis, characterization and correlation studies on the Ni–Zn–Mn ferrite as a photocatalyst Ahmed Elmekawy, M. Abdel-Hakim, F. El Hussiny, G. Farag, O. M. Hemeda, M. M. Mosaad, T. Sharshar and A. M. A. Henaish Eur. Phys. J. Plus, 139 8 (2024) 747 Published online: 20 August 2024 DOI: 10.1140/epjp/s13360-024-05469-5