Rare-earth transition-metal chalcogenides

Although many compounds are mentioned of rare-earth transition-metal chalcogenides, numerous additional compounds remain to be discovered and studied. With current synthetic techniques, such as the use of reactive fluxes, new phases can be isolated. Additional optical, transport, and magnetic measurements, combined with improved theoretical calculations, are needed for most of the compounds discussed. In addition, more sophisticated magnetic measurements and neutron diffraction studies are essential if one is to catalog and understand the highly sought-after d/f magnetic interactions.