Green synthesis and characterization of Li0.5-0.5xMgxFe2.5-0.5xO4 (0.0 ≤ x ≤ 1.0) nano ferrite

We report synthesis of Li0.5-0.5xMgxFe2.5-0.5xO4 (x=0.0, 0.1, 0.4, 0.6, 0.8, 1.0) ferrite, utilizing honey green synthesis via sol gel auto combustion method (without any post-preparation thermal treatment). X-ray diffraction (XRD), vibrating sample magnetometer (VSM) were used to monitor structural, magnetic properties. XRD validates the formation of nanocrystalline spinel phase with Scherrer’s grain diameter varies between 21.5 – 27.9 nm. Results reveal that Mg2+ addition: i) changes experimental lattice parameter (aexp), showing incorporation of Mg2+ ion in the spinel lattice, ii) changes the cation distribution showing presence of that both Li1+, Mg2+ ions on A, B site, iii) modifies inversion parameter (δ) shows transition from inverse to mixed spinel structure, leads to reduction of saturation magnetization (Ms (exp)), iv) alters Ms, understood in terms of cationic redistribution at A, B-sites, v) alters coercivity (Hc), range between 101.4 – 889.9 Oe, vi) shows similar trend of both experimental ‘Ms (exp)’, theoretical ‘Ms (t)’saturation magnetization, reveal that magnetization behavior of the studied samples is governed by Néel model.