TY - JOUR
T1 - A neutron diffraction and Rietveld analysis of cooperative Li motion in beta-eucryptite
AU - Sartbaeva, A.
AU - Redfern, S.A.T.
AU - Lee, W.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+ cations 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+ cations 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.
UR - http://www.scopus.com/inward/record.url?scp=3342900222&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1088/0953-8984/16/29/018
U2 - 10.1088/0953-8984/16/29/018
DO - 10.1088/0953-8984/16/29/018
M3 - Article
AN - SCOPUS:3342900222
SN - 0953-8984
VL - 16
SP - 5267
EP - 5278
JO - Journal of Physics-Condensed Matter
JF - Journal of Physics-Condensed Matter
IS - 29
ER -