Photoluminescence and magnetic properties of Nd-doped ZnGa₂Se₄ S. G. Asadullayeva and Z. A. Jahangirli Eur. Phys. J. B, 98 7 (2025) 142 Published online: 02 July 2025 DOI: 10.1140/epjb/s10051-025-00990-7