
TY  - JOUR
A1  - Kang, ZC 
A1  - Zhang, J 
A1  - Eyring, L 
T1  - Non-Equilibrium Reactions of &#945;-Phase PrO<sub>x</sub> With O<sub>2</sub>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1992
VL  - 45
IS  - 9
SP  - 1499
EP  - 1517
KW  - 
UR  - https://doi.org/10.1071/CH9921499 
N2  - In this paper we use electron diffraction and high-resolution imaging techniques to study the structural consequences of rapid cooling, to room temperature, of fine particles of praseodymium oxide prepared as the disordered &#945;-phase in the composition range from PrO1.78 to PrO1.83 These experiments reveal that particles of the disordered fluorite phase, prepared at higher temperatures, pass through many steps of order as they cool and oxidize to ordered intermediate structures in their near-surface regions. The entities that bring about this transformation are condensed vacant oxygen sites that segregate on {220} planes and finally order to give members of the even-n homologous series PrnO2n-2. The unit cells for new members of the series with n assumed to be 16 are reported. 
ER  -

