Abstract
PrAlO3 is shown to undergo a rhombohedral (R (3) over bar 3c) to orthorhombic (Imma) phase transition upon application of pressures of up to 9.1 GPa. The structures in both phases have been refined from high-resolution synchrotron diffraction data. The structure initially evolves toward a higher-symmetry structure as the pressure is increased before ultimately undergoing a first-order transition to a lower-symmetry orthorhombic structure. This behavior appears to be related to the change in the tilting of the AlO6 groups.
Original language | English |
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Pages (from-to) | 2644-2648 |
Number of pages | 5 |
Journal | Chemistry of Materials |
Volume | 14 |
Issue number | 6 |
DOIs | |
Publication status | Published - 17 Jun 2002 |