OPTICAL INHOMOGENEITIES IN NICKEL ION CONTAINING SILICA-GELS

Authors
ROY S KUNDU D GANGULI D
Citation
S. Roy et al., OPTICAL INHOMOGENEITIES IN NICKEL ION CONTAINING SILICA-GELS, Journal of non-crystalline solids, 194(1-2), 1996, pp. 210-212
Citations number
10
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
194
Issue
1-2
Year of publication
1996
Pages
210 - 212
Database
ISI
SICI code
0022-3093(1996)194:1-2<210:OIINIC>2.0.ZU;2-X
Abstract
Lateral variation in the concentration of Ni2+ in a nickel-containing, flat silica gel plate, caused by migration of the dopant during dryin g (60 degrees C), was measured spectrophotometrically as a function of absorption of Ni2+ at 393 nm. Compositional variations along individu al lines of measurement could be expressed as second order polynomials , and the overall distribution took the form of a shallow basin with a minimum at the central region of the gel plate.