Pressure-induced phase transition in PrAIO₃

Brendan J. Kennedy; Thomas Vogt; C. David Martin; John B. Parise; Joseph A. Hriljac

doi:10.1021/cm0116976

Pressure-induced phase transition in PrAIO₃

Brendan J. Kennedy, Thomas Vogt, C. David Martin, John B. Parise, Joseph A. Hriljac

Chemistry

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

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
Pages (from-to)	2644-2648
Number of pages	5
Journal	Chemistry of Materials
Volume	14
Issue number	6
DOIs	https://doi.org/10.1021/cm0116976
Publication status	Published - 17 Jun 2002

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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.",

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AU - Vogt, Thomas

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AU - Parise, John B.

AU - Hriljac, Joseph A.

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N2 - 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.

AB - 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.

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JO - Chemistry of Materials

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Pressure-induced phase transition in PrAIO₃

Abstract

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