Please use this identifier to cite or link to this item:
|Title:||Structure of LixRb1-xPO3 glasses near the glass transition||Authors:||Hall, A.
|Issue Date:||2009||Citation:||Hall, A., Swenson, J., Bowron, D.T., Adams, S. (2009). Structure of LixRb1-xPO3 glasses near the glass transition. Journal of Physics Condensed Matter 21 (24) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/21/24/245106||Abstract:||The temperature dependence of mixed alkali metaphosphate Li xRb1-xPO3 (x = 1, 0.5, 0) structures has been studied from room temperature up to about 20K above the glass transition temperature (Tg) by means of neutron diffraction and reverse Monte Carlo modelling. The results show that the structural changes are limited to a slight temperature-induced broadening of the peaks in S(Q) and a linear thermal expansion of 50-100ppmK-1. Furthermore, the possible diffusion pathways of the mobile ions have been investigated by the bond valence technique and the results show that they are not significantly affected as the glass is brought above Tg. The decrease in activation energy that occurs above Tg is thus attributed to an increased coupling between the motions of the mobile ions and the relaxation of the phosphate network. © 2009 IOP Publishing Ltd.||Source Title:||Journal of Physics Condensed Matter||URI:||http://scholarbank.nus.edu.sg/handle/10635/86738||ISSN:||09538984||DOI:||10.1088/0953-8984/21/24/245106|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 16, 2020
WEB OF SCIENCETM
checked on Jul 9, 2020
checked on Jul 13, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.