Fig. 5: High temperature diffraction of 5 mol% Am-doped ZrO₂.

HT-PXRD of 5 mol% Am-doped ZrO₂, where the transition from the m-(Am⁴⁺_0.011(7)Zr⁴⁺_0.989(7))O₂ phase (labelled M) can be observed to its tetragonal form (labelled T) reversibly between 900 and 1050 °C.