Crystallization kinetics of Gd(PO3)(3) glass by IR spectroscopy

Authors
Dora, I Georgi, B Christo, P Ivan, P Ivan, G
Citation
I. Dora et al., Crystallization kinetics of Gd(PO3)(3) glass by IR spectroscopy, GL SCI T-GL, 73, 2000, pp. 399-402
Citations number
12
Categorie Soggetti
Material Science & Engineering
Journal title
GLASS SCIENCE AND TECHNOLOGY-GLASTECHNISCHE BERICHTE
ISSN journal
09467475 → ACNP
Volume
73
Year of publication
2000
Supplement
C1
Pages
399 - 402
Database
ISI
SICI code
0946-7475(2000)73:<399:CKOGGB>2.0.ZU;2-2
Abstract
The kinetics of overall devitrification of Gd(PO3)(3) glass is studied by I R spectroscopy and DTA method. The results obtained show that the crystalli zation proceeds in two stages. Initially an unknown phase is formed followe d by the monoclinic gadolinium metaphosphate. The Johnson-Mehl-Avrami plots give an Avrami index of 1 +/- 0.1 indicating that the crystallization proc eeds via surface induced mechanism. An effective activation energy for crys tallization of 530 kJ/mol is obtained by solving the Kissinger equation.