Phase and Structural Behaviour in the NdAlO3-EuAlO3 System

Natalia Ohon; Leonid Vasylechko; Yurii Prots; Marcus Schmidt; Caroline Curfs

doi:10.4028/www.scientific.net/SSP.200.93

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Phase and Structural Behaviour in the NdAlO₃-EuAlO₃ System

Abstract:

Phase and structural behaviour in the NdAlO₃–EuAlO₃ system has been studied in the whole concentration range. Depending on x two kinds of solid solutions Nd_1‑xEu_xAlO₃ exist at room temperature: one with rhombohedral (x < 0.15) and one with orthorhombic (x ≈ 0.15–0.20, where the co-existence of both phases was observed. First-order structural phase transitions Pbnm↔Rc has been detected in Nd_1-xEu_xAlO₃ with x = 0.3, 0.4, 0.6 at 520 K, 627 K and 988 K, respectively. Based on the experimental and literature data, the phase diagram of the pseudo-binary system NdAlO₃–EuAlO₃has been constructed.

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Solid State Phenomena (Volume 200)

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93-99

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https://doi.org/10.4028/www.scientific.net/SSP.200.93

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April 2013

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Natalia Ohon, Leonid Vasylechko, Yurii Prots, Marcus Schmidt, Caroline Curfs

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Crystal Structure, Perovskite, Phase Transition, Rare Earth Aluminates

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