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H. BIH1, L. BIH2, M. MANOUN2,* , P. LAZOR3
Several studies have been reported on lithium phosphate glasses to which lithium halides and lithium sulphate have been added. However, there has been no experimental results for the introduction of sodium fluoride into the lithium tungsten phosphate network. How specifically this feature – mixed alkali in the presence of fluorine ion – influences ion transport in the glasses is unclear. This work concerns the investigation of ion transport behaviour of NaF containing lithium tungsten phosphate glasses in order to understand better the role of NaF in the ionic cation transport. Glasses obtained in the system 0.5[x(2NaF)-(1-x)Li2O]-0.5[0.25(WO3)2-0.75P2O5] were investigated. The glass samples have been characterised using powder X-ray diffraction (XRD), thermal analysis, density and impedance spectroscopy. X-ray diffraction and thermal studies have confirmed that these glasses can be formed in the range x = 0 to 1. The mixed alkali glasses have shown higher activation energies and lower conductivities compared to single alkali doped glasses and this has been attributed to a mixed alkali influence on the electrical conduction in these systems.
Ionic conductivity, Glass transition temperature, Glasses, Tungsten, Phosphate.
H. BIH, L. BIH, M. MANOUN, P. LAZOR, Preparation and electrical conductivity of NaF-Li2OWO3- P2O5 glasses, Optoelectronics and Advanced Materials - Rapid Communications, 3, 9, September 2009, pp.959-963 (2009).
Submitted at: June 24, 2009
Accepted at: Sept. 15, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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