Cation-network interactions in binary alkali metal borate glasses. A far-infrared study

Journal Article · Thu Oct 22 04:00:00 EDT 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100306a058· OSTI ID:5572065

Kamitsos, E I; Karakassides, M A; Chryssikos, G D

The far-infrared spectra of compositions probing the glass-forming regions of all five binary alkali metal borate systems chi M/sub 2/O x (1 - chi)B/sub 2/O/sub 3/ (0 < chi less than or equal to 0.40, M = Na; and 0 < chi less than or equal to 0.35, M = K, Rb, Cs) have been measured and analyzed to systematically study the alkali metal cation-network interactions and their compositional dependence. Band deconvolution of the measured spectra showed the presence of two distinct distributions of alkali metal cation sites in Li, Na, and K glasses. Similar results have been obtained for rubidium and cesium borate glasses of compositions chi > 0.25. One distribution of cation sites has been observed for the lower alkali metal content Rb and Cs glasses. The fractions of cations in the two different network sites have also been evaluated. The squares of the frequencies of the cation-motion bands were found to vary linearly with composition, and exhibit kinks at chi similarly ordered 20, for all but the Cs glasses. This behavior was explained on the basis of the network structural changes known to occur at this composition.

• Research Organization: National Hellenic Research Foundation, Athens, Greece
• OSTI ID: 5572065
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:22; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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ABSORPTION SPECTROSCOPY
ALKALI METAL COMPOUNDS
BORATES
BORON COMPOUNDS
CATIONS
CESIUM COMPOUNDS
CESIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FAR INFRARED RADIATION
GLASS
INFORMATION
INFRARED RADIATION
INFRARED SPECTRA
IONIC CONDUCTIVITY
IONS
LITHIUM COMPOUNDS
LITHIUM OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUANTITY RATIO
RADIATIONS
RUBIDIUM COMPOUNDS
RUBIDIUM OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
SPECTRA
SPECTROSCOPY