For citations:

Nitika , Rana A., Kumar V. Study of magnetic and optical transitions in MFe₂O₄ (M=Co, Zn, Fe, Mn) with spinel structure. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(4):481-491. https://doi.org/10.17586/2220-8054-2021-12-4-481-491