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Evolution of Pb_{1-x}Cd_{x}Te Solid Solution Structure at High Temperatures

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Minikayev R., Dynowska E., Kamińska E., Szczerbakow A., Trots D., Story T., Szuszkiewicz W.

Acta Physica Polonica A

2011

vol. 119

issue 5

699-701

The recent successful growth of single, bulk Pb_{1-x}Cd_{x}Te crystals by self-selecting vapor transport method at the Institute of Physics of the Polish Academy of Sciences in Warsaw opened new opportunities to study the physical properties of this interesting material in detail. In this work we report the preliminary results of X-ray powder diffraction studies performed on a set of Pb_{1-x}Cd_{x}Te solid solutions (where x ≤ 0.056) at high temperatures (295 K ≤ T ≤ 1100 K) and analyzed with the Rietveld refinement. Our results demonstrate the necessity of some correction of the relevant phase diagram and of the solubility limit, known from the literature.

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

100%

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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2 Acta Physica Polonica A

1 2011

1 2010

2 Trots D.

1 Basyuk T.

1 Berezovets V.

1 Dynowska E.

1 Fadeev S.

1 Kamińska E.

1 Minikayev R.

1 Niewa R.

1 Story T.

1 Szczerbakow A.

1 Szuszkiewicz W.

1 Vasylechko L.

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Evolution of Pb_{1-x}Cd_{x}Te Solid Solution Structure at High Temperatures

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