Materials scientists review the current understanding of the properties and application of ferrite nanostructures with tunable properties. Their topics include recent developments in processing and characterizing spinel ferrite nanoparticles and their biomedical applications, a review of recent developments in ferrite-based hetero-junctions for the photocatalytic degradation of organic pollutants, a review of the synthesis and characterization of mixed nickel-zinc ferrites, applying magnetic nano-particles and their composites as adsorbents for waste water treatment, and multiferroicity in aurivillius-based Bi4Ti3O12 ceramics. Annotation ©2022 Ringgold, Inc., Portland, OR (protoview.com)