Figure 2

Plots of unit cell parameters, angle β, and volume, as a function of weighted average cation radius of compounds with the brannerite structure; data for ThTi2O6 and UTi2O6 are shown as black crosses; data from this study for ThTi2O6 compositions targeting U5+ or U6+ incorporation, with appropriate charge compensation, are shown as red (Th site) and blue (Ti site) symbols; data for U5+ brannerites (derived from UTi2O6) are shown as green symbols. See Table 1 for details.