Interaction of ceria and erbia in air within temperature range 1500–600 °C

Phase equilibriums and structure transformations in the CeO2–Er2O3 system have been studied within 1500–600 °C in the full concentration range using XRD and petrography methods. It was established that the system is characterized by the formation of solid solutions on the basis of cubic modification of Er2O3 (C-type) and fluorite CeO2 (F-type). Solubility limits and concentration dependences of lattice parameters were determined for the phases forming in the system.