STRUCTURE AND OPTICAL-PROPERTIES OF LITHIUM NIOBIUM-PHOSPHATE GLASSESAND GLASS-CERAMICS

Authors
DEARAUJO EB DEPAIVA JAC DEARAUJO MAB SOMBRA ASB
Citation
Eb. Dearaujo et al., STRUCTURE AND OPTICAL-PROPERTIES OF LITHIUM NIOBIUM-PHOSPHATE GLASSESAND GLASS-CERAMICS, Physica status solidi. b, Basic research, 197(1), 1996, pp. 231-240
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. b, Basic research → ACNP
ISSN journal
03701972
Volume
197
Issue
1
Year of publication
1996
Pages
231 - 240
Database
ISI
SICI code
0370-1972(1996)197:1<231:SAOOLN>2.0.ZU;2-Z
Abstract
Lithium niobium-phosphate glasses [(x Nb2O5(0.5 - x) P2O5) 0.5 Li2O]: y Fe2O3 were studied using Fe-57 Mossbauer and infrared spectroscopy. The use of both techniques gives new information about the structure a nd crystalline phases in the pure glassy and glass ceramic systems. Th e iron atoms are present as Fe3+ and Fe2+ ions and in both cases prove d to be surrounded by six oxygen atoms (network modifier). Tile result s suggest that the Nb ions occupy sites of average octahedral symmetry . Precipitation of crystalline phases of LiNbO3 and Li3PO4 was detecte d.