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Phase relations and Gibbs energies of spinel phases and solid solutions in the system Mg–Rh–O

“…8(b) together with experimental data obtained in this study. The calculated decomposition temperature of the spinel solid solution in air is 1392 (±1.2) K, which is in good accord with the value of 1393 (±5) K reported by Skrobot and Grebenshchikov [18]. This value is also close to the temperature 1393 (±1.5) K calculated from the oxygen potential data measured by Nell and O'Neill [9] for MgRh 2 O 4 .…”