Property Engineering of Spinel Ferrite-based Nanostructures

Spinel ferrite-based nanostructures have attracted considerable attention owing to their outstanding magnetic properties, including high permeability, strong magnetic anisotropy, and high electrical resistivity. Tailoring these properties through controlled chemical composition and morpho-structural engineering is crucial for advanced technological applications. In this contribution, we highlight how wet-chemistry synthesis enables precise control over these parameters. We discuss the effects of size and composition on the magnetic behavior of core@shell antiferromagnetic@ferrimagnetic nanoparticles prepared by thermal decomposition of metal oleates. We also examine the influence of particle shape, lattice defects (vacancies, dislocations, stacking faults, and antiphase boundaries), and internal stress relaxation in cobalt ferrite nanoparticles, demonstrating how these factors can be exploited to optimize intrinsic magnetic properties such as coercivity and exchange bias.