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Phase and Structural Behaviour of the PrAlO_{3}-SmAlO_{3} System

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Basyuk T., Vasylechko L., Fadeev S., Berezovets V., Trots D., Niewa R.

issue 1

98-103

High resolution in situ X-ray powder diffraction applying synchrotron radiation and differential thermal analysis/scanning calorimetry methods have been used to examine the pseudo-binary system PrAlO_3-SmAlO_3. Two kinds of solid solutions with rhombohedral and orthorhombic structure exist at room temperature. At elevated temperatures, a continuous phase transition Pm3m ↔ R3c and a first-order transformation R3c ↔ Pbmn occur in the two respective phases. A sequence of low-temperature phase transformations R3c ↔ Imma ↔ C2/m has been detected in Pr_{1-x}Sm_xAlO_3 samples with x < 0.35. Based on in situ powder diffraction and differential thermal analysis/scanning calorimetry data, the phase diagram of the pseudo-binary system PrAlO_3-SmAlO_3 has been constructed.

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1 Acta Physica Polonica A

1 2010

1 Basyuk T.

1 Berezovets V.

1 Fadeev S.

1 Niewa R.

1 Trots D.

1 Vasylechko L.

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Phase and Structural Behaviour of the PrAlO_{3}-SmAlO_{3} System