Gianguido Baldinozzi5,Luis Casillas1,Maulik Patel2,Manabu Ishimaru3,Kurt Sickafus4
Linköping University1,University of Liverpool2,Kyushu Institute of Technology3,Los Alamos National Laboratory4,University of Paris Saclay5
Gianguido Baldinozzi5,Luis Casillas1,Maulik Patel2,Manabu Ishimaru3,Kurt Sickafus4
Linköping University1,University of Liverpool2,Kyushu Institute of Technology3,Los Alamos National Laboratory4,University of Paris Saclay5
Cerium, praseodymium, and terbium stand out among other rare-earth systems because they exhibit two possible oxidation states that produce a series of anion deficient phases that are fluorite-related and have a generic formula M<sub>n</sub>O<sub>2n-2</sub>. Since the seminal works of Eyring, and the valuable contributions of many other scientists, many of the occurring phases were determined using scattering techniques. It was then possible to propose a paradigm for the particular oxygen vacancy order that is observed in most of these phases<br/>We would like to discuss how the structural characteristics of these systems can affect their radiation tolerance. In this contribution, we analyze using Bader’s analysis the charge density and the chemical bonds of the iota phase, which corresponds to the compound with n=7 of these systems and try to draw a comparison with the behaviors observed in the related broad family of delta phases with generic formulas A<sub>6</sub>BO<sub>12</sub> and A<sub>4</sub>B<sub>3</sub>O<sub>12</sub>.