EPR study of phosphate glasses containing two types of transitional metal ions

Authors
Cozar, O Ardelean, I Simon, V Mih, V Vedean, N
Citation
O. Cozar et al., EPR study of phosphate glasses containing two types of transitional metal ions, J MAGN MAGN, 197, 1999, pp. 269-271
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
197
Year of publication
1999
Pages
269 - 271
Database
ISI
SICI code
0304-8853(199905)197:<269:ESOPGC>2.0.ZU;2-9
Abstract
The following glass systems x(CuO . V2O5)(100 - x)[2P(2)O(5). PbO] and x .( MnO . V2O5)(100 - x)[2P(2)O(5). Na2O] with 0 less than or equal to x less t han or equal to 40 mol% were prepared and investigated by EPR spectroscopy. The obtained data suggest an octahedral-tetrahedral (Td) distorted local s ymmetry for Cu2+ and Mn2+ ions, and a square-pyramidal (C-4v) coordination for V4+ ions. The mixed exchange pairs (Cu2+-V4+, Mn4+) appear at high tran sition metal oxides content (x > 10 mol%). (C) 1999 Elsevier Science B.V. A ll rights reserved.