Handbook on the Physics and Chemistry of Rare Earths: Including Actinides, Volume 63, the latest release in this continuous series that covers all aspects of rare earth science, including chemistry, life sciences, materials science and physics, presents interesting chapters on a variety of topics, with this release including sections on Rare earth permanent magnets, Biological functions of the trivalent rare earths and actinides, Recent Advances in f-Block Metal-Metal Bonds: Structure, Reactivity and Applications, Exotic rare earth-based materials for emerging spintronic technology, and more.