Structural and dynamical studies of δ-Bi2O3 oxide ion conductors. V. A study of the system (Bi2O3)1-x(Eu2O3)x by 151Eu Mössbauer spectroscopy

P. D. Battle; T. C. Gibb; P. Lightfoot; D. C. Munro

doi:10.1016/0022-4596(89)90050-9

Structural and dynamical studies of δ-Bi₂O₃ oxide ion conductors. V. A study of the system (Bi₂O₃)_1-x(Eu₂O₃)_x by ¹⁵¹Eu Mössbauer spectroscopy

P. D. Battle^*, T. C. Gibb, P. Lightfoot, D. C. Munro

^*Corresponding author for this work

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

Abstract

Cubic (x = 0.3) and rhombohedral (x = 0.2) phases have been prepared in the solid solution (Bi₂O₃)_1-x(Eu₂O₃)_x. The cubic material transformed to the rhombohedral form when subjected to a pressure of 4 GPa at a temperature of 873 K; at 4 GPa and 1073 K the transformation was to a phase of apparently monoclinic symmetry. ¹⁵¹Eu Mössbauer spectroscopy has been used to study all three forms of (Bi₂O₃)_0.7(Eu₂O₃)_0.3 in order to estimate the extent of anion-vacancy ordering in the solid solution. The Mössbauer linewidth from all samples is lower than that measured for CEu₂O₃, suggesting that the Eu atoms in these compounds have a single, well-defined, local environment.

Original language	English
Pages (from-to)	31-36
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	83
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(89)90050-9
Publication status	Published - 1 Jan 1989

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title = "Structural and dynamical studies of δ-Bi2O3 oxide ion conductors. V. A study of the system (Bi2O3)1-x(Eu2O3)x by 151Eu M{\"o}ssbauer spectroscopy",

abstract = "Cubic (x = 0.3) and rhombohedral (x = 0.2) phases have been prepared in the solid solution (Bi2O3)1-x(Eu2O3)x. The cubic material transformed to the rhombohedral form when subjected to a pressure of 4 GPa at a temperature of 873 K; at 4 GPa and 1073 K the transformation was to a phase of apparently monoclinic symmetry. 151Eu M{\"o}ssbauer spectroscopy has been used to study all three forms of (Bi2O3)0.7(Eu2O3)0.3 in order to estimate the extent of anion-vacancy ordering in the solid solution. The M{\"o}ssbauer linewidth from all samples is lower than that measured for CEu2O3, suggesting that the Eu atoms in these compounds have a single, well-defined, local environment.",

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AU - Gibb, T. C.

AU - Lightfoot, P.

AU - Munro, D. C.

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N2 - Cubic (x = 0.3) and rhombohedral (x = 0.2) phases have been prepared in the solid solution (Bi2O3)1-x(Eu2O3)x. The cubic material transformed to the rhombohedral form when subjected to a pressure of 4 GPa at a temperature of 873 K; at 4 GPa and 1073 K the transformation was to a phase of apparently monoclinic symmetry. 151Eu Mössbauer spectroscopy has been used to study all three forms of (Bi2O3)0.7(Eu2O3)0.3 in order to estimate the extent of anion-vacancy ordering in the solid solution. The Mössbauer linewidth from all samples is lower than that measured for CEu2O3, suggesting that the Eu atoms in these compounds have a single, well-defined, local environment.

AB - Cubic (x = 0.3) and rhombohedral (x = 0.2) phases have been prepared in the solid solution (Bi2O3)1-x(Eu2O3)x. The cubic material transformed to the rhombohedral form when subjected to a pressure of 4 GPa at a temperature of 873 K; at 4 GPa and 1073 K the transformation was to a phase of apparently monoclinic symmetry. 151Eu Mössbauer spectroscopy has been used to study all three forms of (Bi2O3)0.7(Eu2O3)0.3 in order to estimate the extent of anion-vacancy ordering in the solid solution. The Mössbauer linewidth from all samples is lower than that measured for CEu2O3, suggesting that the Eu atoms in these compounds have a single, well-defined, local environment.

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Structural and dynamical studies of δ-Bi₂O₃ oxide ion conductors. V. A study of the system (Bi₂O₃)_1-x(Eu₂O₃)_x by ¹⁵¹Eu Mössbauer spectroscopy

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