Crystallization process of lithium oxysulfide glasses

Citation
A. Hayashi et al., Crystallization process of lithium oxysulfide glasses, J NON-CRYST, 276(1-3), 2000, pp. 27-34
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN journal
0022-3093 → ACNP
Volume
276
Issue
1-3
Year of publication
2000
Pages
27 - 34
Database
ISI
SICI code
0022-3093(200010)276:1-3<27:CPOLOG>2.0.ZU;2-6
Abstract
Crystallization kinetics and structural change during crystallization of th e (100 - x)(0.6Li(2)S . 0.4SiS(2)) . xLi(3)PO(4) oxysulfide glasses were in vestigated. The activation energies, E-a, for crystal growth estimated by t he modified Kissinger equation ranged from 168 to 447 kJ/mol. The compositi on dependence of E-a showed opposite variation to that of the difference in the temperatures of crystallization and glass transition. This inverse cor relation was explained in terms of the fragility of the oxysulfide system. Solid-state nuclear magnetic resonance (NMR) measurements revealed that the silicon and phosphorus atoms coordinated with both sulfur and oxygen atoms present in the oxysulfide glasses were not detected after crystallization. Relationship between the thermal stability of these glasses and the magnit ude of the structural change during crystallization is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.