Assessing the oxidation states and structural stability of the Ce analogue of brannerite

The Ce‐containing analogue of brannerite (ie, UTi 2 O 6 ) was previously considered to be stoichiometric (ie, CeTi 2 O 6 ); however, it has recently been determined that the material is O deficient. This oxygen‐deficient material has been suggested to be charged balanced by the presence of a minor concentration of Ce 3+ or by the A‐site being cation deficient with the Ce oxidation state being 4+. A variety of Ti‐containing oxides (including …