Estimating Free Energies of Formation of Titanate () and Zirconate () Pyrochlore Phases of Trivalent Lanthanides and Actinides
Figure 7
A plot of the free energy of reaction for the formation of titanate pyrochlore from constituent oxides (by (8) in kJ/mol shown as a function of the radius ratio of the A site (RE and actinide) cation and the B site (Ti) cation (closed circles) with a nonlinear regression fit (solid line, ). The experimentally measured formation enthalpies of titanate pyrochlores from constituent oxides (of twelve rare earth cations (from [21]) are also shown as a function of the radius ratio (open squares) with a linear regression fit (dashed line, ) for comparison.
