PNNL

Abstract

The crystal structures, general properties, and synthesis methods of anhydrous monazite and xenotime (REPO4) crystalline materials are summarized within this review. For both monazite and xenotime, currently available ICSD data were used to study the effect of incorporating different RE cations on the unit cell parameters, volume, density, and bond lengths. Domains of monazite-type and xenotime-type structures and other AXO4 compounds with respect to cations sizes are discussed. Reported chemical and radiation durabilities are summarized. Different synthesis conditions and chemicals used for single crystals and polycrystalline powders, as well as first principles calculations of the structures and thermophysical properties of these minerals are also provided.