TY - JOUR AU - Nitika AU - Anu Rana AU - Vinod Kumar TI - Study of magnetic and optical transitions in MFe$_2$O$_4$ (M = Co, Zn, Fe, Mn) with spinel structure JO - Nanosistemy: fizika, himiâ, matematika PY - 2021 SP - 481 EP - 491 VL - 12 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NANO_2021_12_4_a9/ LA - en ID - NANO_2021_12_4_a9 ER -