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

• Authors: T. Basyuk , L. Vasylechko , S. Fadeev , V. Berezovets , D. Trots , R. Niewa
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

61.05.Cp; 61.50.Ks; 81.30.Bx

Discipline

• 61.50.Ks: Crystallographic aspects of phase transformations; pressure effects(see also 81.30.Hd in materials science)
• 81.30.Bx: Phase diagrams of metals, alloys, and oxides

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 1
• Pages: 98-103

Dates

published

2010-01

Contributors

author

T. Basyuk

• Lviv Polytechnic National University, 12 Bandera St., 79013 Lviv, Ukraine

author

L. Vasylechko

• Lviv Polytechnic National University, 12 Bandera St., 79013 Lviv, Ukraine

author

S. Fadeev

• Lviv Polytechnic National University, 12 Bandera St., 79013 Lviv, Ukraine

author

V. Berezovets

• Karpenko Physico-Mechanical Institute, 5 Naukova St., 79601 Lviv, Ukraine

author

D. Trots

• Bayerisches Geoinstitut, Universität Bayreuth, Universitätsstr. 30, 95447 Bayreuth, Germany

author

R. Niewa

• Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany

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Identifiers

DOI

10.12693/APhysPolA.117.98