Structural, Optical and Vibrational analysis of Co2+ Substitution of CoyNixZn(1-y)-xFe2O4 NanoferritesRitu, Shobha Ram Choudhary, P. A. Alvi and B. L. ChoudharyEPJ Web Conf., 356 (2026) 01002DOI: https://doi.org/10.1051/epjconf/202635601002