Composition domains in the lanthanide higher oxides

The hysteresis loop of the oxygen content of the PrO and TbO is a obvious peculiar characteristic of the lanthanide higher oxides, but the hysteresis of the oxygen content of the CeO is difficult to observe directly in the isobaric curves because 

FIGURE 26 The structural model of the reaction process between Pr/Oi2 and Pr90i6. 

FIGURE 28 Composition domains of a-phase and /9( 1) phase (a-phase is PrC 2 ar d P0-) phase is PrOi.833). 

FIGURE 29 Steps surface profile of a TbOi.833 crystal particles. 

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