Reversible valence change of the europium ion doped in alkaline-earth tetraborates

Authors
Machida, K Ueda, D Inoue, S Adachi, G
Citation
K. Machida et al., Reversible valence change of the europium ion doped in alkaline-earth tetraborates, CHEM LETT, (8), 1999, pp. 785-786
Citations number
10
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
8
Year of publication
1999
Pages
785 - 786
Database
ISI
SICI code
0366-7022(199908):8<785:RVCOTE>2.0.ZU;2-3
Abstract
Valence state of the europium (Eu) ion doped in MB4O7 (M=Sr and Ba) was rev ersibly changed between the trivalent and divalent state by repeating the c rystallization and vitrification cycle of the host lattices by heating even in air at 973-1273 K and such valence change was discussed on the basis of their structural connection manner for the BO3 and/or BO4 units in the net works of crystalline and vitreous forms.