MAGNETIC-BEHAVIOR OF NA2MSI4O10 (M=CO, NI) COMPOUNDS

Authors
DURAND G VILMINOT S RICHARDPLOUET M DERORY A LAMBOUR JP DRILLON M
Citation
G. Durand et al., MAGNETIC-BEHAVIOR OF NA2MSI4O10 (M=CO, NI) COMPOUNDS, Journal of solid state chemistry, 131(2), 1997, pp. 335-340
Citations number
6
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Physical
Journal title
Journal of solid state chemistry → ACNP
ISSN journal
00224596
Volume
131
Issue
2
Year of publication
1997
Pages
335 - 340
Database
ISI
SICI code
0022-4596(1997)131:2<335:MON(NC>2.0.ZU;2-N
Abstract
NTa2MSi4O10 (M = Co, Ni) compounds have been obtained by annealing at 700 degrees C a xerogel prepared from silicon and sodium ethoxides and M nitrate, Both silicates appear to be isostructural with the corresp onding copper phase, with the presence of silicate pipes built up from (Si8O20)(8-) units. The M cations define isolated (M2O8)(4-) dimers f rom two edge-sharing square pyramids with M-M distances of around 3.17 Angstrom. The magnetic properties have been analyzed as the presence of ferromagnetic interactions inside the dimers and antiferromagnetic interactions between the dimers at low temperature. (C) 1997 Academic Press.