|
authors |
Gaddam, A; Fernandes, HR; Doumert, B; Montagne, L; Ferreira, JMF |
|
nationality |
International |
|
journal |
PHYSICAL CHEMISTRY CHEMICAL PHYSICS |
|
keywords |
SOLID-STATE NMR; HIGH-RESOLUTION AL-27; BOROSILICATE GLASSES; MAS-NMR; INORGANIC GLASSES; BORATE GLASSES; ALUMINOSILICATE GLASSES; RAMAN-SPECTROSCOPY; PHOSPHATE-GLASSES; LI2O-SIO2 SYSTEM |
|
abstract |
The current study reports on the relaxation behaviour of lithium silicate based glasses as probed by NMR spectroscopy. A total of four glass compositions were studied with the parent composition being 28Li(2)O-72SiO(2), and added dopants of Al and B. All the compositions showed significant differences in the NMR spectra of both annealed and non-annealed glasses demonstrating the structural relaxation behaviour. We extended our binary statistical mechanical model to these complex compositions to study the relaxation behaviour. By the combined use of the extended statistical mechanical model and broken ergodicity, we shed light on the mechanism of structural relaxation as understood by NMR spectroscopy. We studied the crystallization behaviour of the glasses and reported on the variations of the residual glass composition changes in the crystallization fraction. |
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publisher |
ROYAL SOC CHEMISTRY |
|
issn |
1463-9076 |
|
year published |
2017 |
|
volume |
19 |
|
issue |
38 |
|
beginning page |
26034 |
|
ending page |
26046 |
|
digital object identifier (doi) |
10.1039/c7cp01690e |
|
web of science category |
Chemistry, Physical; Physics, Atomic, Molecular & Chemical |
|
subject category |
Chemistry; Physics |
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unique article identifier |
WOS:000412275200023
|
