A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite

Asel Sartbaeva; Simon A.T. Redfern; William T. Lee

doi:10.1088/0953-8984/16/29/018

A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite

Asel Sartbaeva, Simon A.T. Redfern, William T. Lee

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17 Citations (Scopus)

Abstract

Li⁺ mobility and structural changes in the aluminosilicate beta-eucryptite have been studied by high-resolution powder neutron diffraction as a function of temperature from 573 to 873 K. A Li split-atom model was used to describe the disorder of Li⁺ ions in the structure. Analysis of the data shows two anomalies around 698 and 758 K. The first anomaly is attributed to an M-point zone boundary transition reported in the literature, which is connected to the appearance of the incommensurate structure. The second anomaly is attributed to a displacive phase transition of the framework and doubling in the a cell parameter.

Original language	English
Pages (from-to)	5267-5278
Number of pages	12
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	29
Early online date	9 Jul 2004
DOIs	https://doi.org/10.1088/0953-8984/16/29/018
Publication status	Published - 28 Jul 2004
Externally published	Yes

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title = "A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite",

abstract = "Li+ mobility and structural changes in the aluminosilicate beta-eucryptite have been studied by high-resolution powder neutron diffraction as a function of temperature from 573 to 873 K. A Li split-atom model was used to describe the disorder of Li+ ions in the structure. Analysis of the data shows two anomalies around 698 and 758 K. The first anomaly is attributed to an M-point zone boundary transition reported in the literature, which is connected to the appearance of the incommensurate structure. The second anomaly is attributed to a displacive phase transition of the framework and doubling in the a cell parameter.",

keywords = "Neutron diffraction, Rietveld analysis, Li split-atom",

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T1 - A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite

AU - Sartbaeva, Asel

AU - Redfern, Simon A.T.

AU - Lee, William T.

PY - 2004/7/28

Y1 - 2004/7/28

N2 - Li+ mobility and structural changes in the aluminosilicate beta-eucryptite have been studied by high-resolution powder neutron diffraction as a function of temperature from 573 to 873 K. A Li split-atom model was used to describe the disorder of Li+ ions in the structure. Analysis of the data shows two anomalies around 698 and 758 K. The first anomaly is attributed to an M-point zone boundary transition reported in the literature, which is connected to the appearance of the incommensurate structure. The second anomaly is attributed to a displacive phase transition of the framework and doubling in the a cell parameter.

AB - Li+ mobility and structural changes in the aluminosilicate beta-eucryptite have been studied by high-resolution powder neutron diffraction as a function of temperature from 573 to 873 K. A Li split-atom model was used to describe the disorder of Li+ ions in the structure. Analysis of the data shows two anomalies around 698 and 758 K. The first anomaly is attributed to an M-point zone boundary transition reported in the literature, which is connected to the appearance of the incommensurate structure. The second anomaly is attributed to a displacive phase transition of the framework and doubling in the a cell parameter.

KW - Neutron diffraction

KW - Rietveld analysis

KW - Li split-atom

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DO - 10.1088/0953-8984/16/29/018

M3 - Article

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SN - 0953-8984

VL - 16

SP - 5267

EP - 5278

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 29

ER -

A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite

Abstract

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