Structural, optical and magnetic properties of Y-doped CoFe2O4 nanoparticles prepared by a simple co-precipitation method

Unveiling the impact of Ni2+/Y3+ co-substitution on the structural, dielectric, and impedance properties of multiferroic spinel ferrite for hydroelectric cell application

“…For 10% nickel concentration, the atoms with the smaller ionic radii [Ni 2+ (0.69 Å)] try to substitute the ions with bigger ionic radii [Co 2+ (0.745 Å)], and then strain starts developing and the net crystallite size increases. 24 It can be observed from Table 1 that the microstrain values increase with the rise in nickel concentration from 0% to 15%. This increase in microstrain could be attributed to changes in the lattice parameters (also tabulated in Table 2) associated with the stretching and bending of the bonds, which subsequently changes the bond length and in turn strain.…”

Catalysts Based on Nanoscale Iron and Cobalt Immobilized on Polymers for Catalytic Oxidation of Aromatic Hydrocarbons: Synthesis, Physico-Chemical Studies, and Tests of Catalytic Activity

“…Catalysts based on cobalt and iron nanoparticles are environmentally friendly and allow for subsequent oxidation of hydrocarbons in the liquid phase under fairly mild conditions. Oxygen is the cheapest and most widely used oxidizing agent that can be used for the syntheses of many oxygen-containing compounds [3][4][5][6][7][8][9][10].…”